OBDII P Codes on an Aston Martin DB9

P Codes found on an Aston Martin DB9
P Codes found by OBDII reader

While servicing your DB9 you might run into a situation where your dash display or OBDII reader shows you an error message in the form of a cryptic P code like P1488, setting the stage for an ominous visit to your local dealer and the commensurate drain on your bank account.  Without any reference, your tendency might be to stick your head in the sand and just drive on risking damage to the car.  In this post I wanted to publish a list of all the P codes I could find so that it might help steer you in the right direction to taking care of the issue yourself.

Some P codes are innocuous.   For example, P1488 [Exhaust (muffler) Bypass Control Circuit] is logged if you pull the famous Fuse 22 to uncork your exhaust.   The car knows Fuse 22 is pulled, makes a note of it, but doesn’t set off the idiot light (Malfunction Indicator Lamp or MIL).   If you find this code and you have pulled your fuse, you can just ignore it.

Aston Martin Diagnostic Manual

Aston Martin OBDII Diagnostic Manual - Preliminary Issue Cover
Download the Aston Martin OBDII Diagnostic Manual – Preliminary Issue

I have gathered the list below from a preliminary publication of the Aston Martin Factory “OBD II Diagnostic Manual” published in April 2004.   The publication is a great resource, and has a tremendous amount of detail about each P Code, and other theory about the cars operation and diagnostics.  356 pages of technical details and some very helpful diagrams.   Being that it was a preliminary publication it’s a good starting point for the early cars (MY 04/05/06), but I am certain that as the DB9 was developed more codes were added and this list is incomplete.   The official place to get the P codes explained is on the Aston Martin Technical Information Website (which I have covered in another blog post).   What I dislike about the format on the website is that the codes aren’t in a single document anymore, but rather each has its own web page section.  This makes a lot of sense for Aston Martin (alleviates the need to keep a large complicated document up to date), but for us DIY repair guys without an expensive $2,600 annual subscription to the website it’s a handicap.   So, I would recommend that if you find the P code you are experiencing in the list below just check out the PDF.   If the P code you have isn’t listed, perhaps spend the $100 for a one day subscription to the website and look up the code you have (and maybe send me the details or your code and a PDF print of what was on the website about it).  Or succumb, and take your car into the dealership.

OBDII Acronyms Explained

Understanding a P code is hard enough, and even harder is you don’t understand the acronyms used in the descriptions.   Here is a list of them explained:

Acronym Definition
A/C Air Conditioning
A/T Auto Transmission
ACC Air Con Clutch
ACCR Air Con Clutch Request
ACCS Air Con Cycling Switch
ACPSW Air Con Pressure Switch
AP Absolute Pressure
ATDC After TDC
B+ Battery Positive Voltage
BARO Barometric Pressure
BOO Brake On/Off
CANP Canister Purge
CKP Crankshaft Position
CMP Camshaft Position
CO Carbon Monoxide
CO2 Carbon Dioxide
CSE GND Case Ground (PCM Ground)
DTC Diagnostic Trouble Code
DTM Diagnostic Test Mode
DVOM Digital Volt-Ohm Meter
ECT Engine Coolant Temperature
EEC Electronic Engine Control
EVAP Evaporative Emissions
FC Fan Control
FP Fuel Pump
FPM Fuel Pump Monitor
GEN Generator
GND Ground
GVW Gross Vehicle Weight
HC Hydrocarbon
HFC High Speed Fan Control
HO2S Heated Oxygen Sensor
IAC Idle Air Control
IAT Intake Air Temperature
IDM Ignition Diagnostic Monitor
KAM Keep Alive Memory
KAPWR Keep Alive Power
KOEO Key On Engine Off Test
KOER Key On Engine Running Test
M/T Manual Transmission
MAF Mass Air Flow
MAF RTN Mass Air Flow Signal Return
MIL Malfunction Indicator Lamp
NC Normally Closed

 

NO Normally Open
NOx Oxides of Nitrogen
OBD On Board Diagnostics
OSS Output Shaft Speed
PATS Passive Anti Theft System
PCM Powertrain Control Module
PCV Positive Crankcase Ventilation
PNP Park Neutral Switch
PSP Power Steering Pressure
PWR GND Power Ground
RPM Engine Revolutions per Minute
RTN Return
SIG RTN Signal Return
TACH Tachometer
TCC Torque Convertor Clutch
TFT Transmission Fluid Temperature
TR Transmission Range

 

TSS Turbine Shaft Speed
VECI Label Vehicle Emission Control Information
VPWR V Power, Vbatt+ switched Supply
VREF Reference Voltage
VSS Vehicle Speed Sensor

P Codes

Here is the entire list.  I have them listed out here so that the Google search index can pick them up and guide you back here.  If you P Code is listed below, download the PDF and lookup the details on it.

P Code Fault Definition
P0040 Oxygen Sensor Signals Swapped Bank 1 Sensor 1 / Bank 2 Sensor 1
P0041 Oxygen Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2
P0053 HO2S Heater Resistance (Bank 1, Sensor 1)
P0054 HO2S Heater Resistance (Bank 1, Sensor 2)
P0059 HO2S Heater Resistance (Bank 2, Sensor 1)
P0060 HO2S Heater Resistance (Bank 2, Sensor 2)
P0068 MAF v Throttle Correlation Check
P0087 Fuel starvation
P0102 Mass or Volume Air Flow Circuit Low Input
P0103 Mass or Volume Air Flow Circuit High Input
P0104 Intermittent MAF sensor signal
P0107 Manifold Absolute Pressure/BARO Sensor Low Input
P0108 Manifold Absolute Pressure/BARO Sensor High Input
P0109 Manifold Absolute Pressure/BARO Sensor Intermittent
P0112 Intake Air Temperature Sensor 1 Circuit Low Input
P0113 Intake Air Temperature Sensor 1 Circuit High Input
P0114 Intake Air Temperature Sensor Intermittent
P0116 Engine Coolant Temperature Circuit Range/Performance
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
P0119 Engine Coolant Temperature Circuit Intermittent
P0121 Throttle/Pedal Position Sensor A Circuit Range/Performance
P0122 Throttle/Pedal Position Sensor A Circuit Low Input
P0123 Throttle/Pedal Position Sensor A Circuit High Input
P0124 Throttle/Pedal Position Sensor A Intermittent
P0128 Coolant Thermostat (Coolant Temp Below Regulating Temperature)
P0132 O2 Circuit High Voltage (Bank 1, Sensor 1)
P0133 O2 Circuit Slow Response (Bank 1, Sensor 1)
P0135 O2 Heater Circuit (Bank 1, Sensor 1)
P0138 O2 Circuit High Voltage (Bank 1, Sensor 2)
P0141 O2 Heater Circuit (Bank 1, Sensor 2)
P0148 Fuel Delivery Error. System too lean
P0152 O2 Circuit High Voltage (Bank 2, Sensor 1)
P0153 O2 Circuit Slow Response (Bank 2, Sensor 1)
P0155 O2 Heater Circuit (Bank 2, Sensor 1)
P0158 O2 Circuit High Voltage (Bank 2, Sensor 2)
P0161 O2 Heater Circuit (Bank 2, Sensor 2)
P0171 System Too Lean (Bank 1)
P0172 System Too Rich (Bank 1)
P0174 System Too Lean (Bank 2)
P0175 System Too Rich (Bank 2)
P0180 Fuel Temperature Sensor A Circuit
P0182 Fuel Temperature Sensor Low Input
P0183 Fuel Temperature Sensor High Input
P0190 Fuel Rail Pressure Sensor Midrange Fault
P0191 Fuel Rail Pressure Sensor Range/Performance
P0192 Fuel Rail Pressure Sensor Low Input
P0193 Fuel Rail Pressure Sensor High Input
P0201 Injector Circuit / Open – Cylinder 1
P0202 Injector Circuit / Open – Cylinder 2
P0203 Injector Circuit / Open – Cylinder 3
P0204 Injector Circuit / Open – Cylinder 4
P0205 Injector Circuit / Open – Cylinder 5
P0206 Injector Circuit / Open – Cylinder 6
P0218 Transmission fluid temperature
P0221 Throttle/Pedal Position Switch B Circuit Range/Performance
P0222 Throttle/Pedal Position Sensor B Circuit Low Input
P0223 Throttle/Pedal Position Sensor B Circuit High Input
P0224 Throttle/Pedal Position Sensor B Circuit Intermittent
P0300 Random Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0305 Cylinder 5 Misfire Detected
P0306 Cylinder 6 Misfire Detected
P0307 Cylinder 7 Misfire Detected
P0308 Cylinder 8 Misfire Detected
P0309 Cylinder 9 Misfire Detected
P0310 Cylinder 10 Misfire Detected
P0311 Cylinder 11 Misfire Detected
P0312 Cylinder 12 Misfire Detected
P0315 Crankshaft Position System Variation Not Learned
P0316 Misfire Detected On Startup (First 1000 Revolutions)
P0320 Ignition Engine Speed Input Circuit Fault
P0322 Lost CPS Signal
P0340 Cylinder Identification Sensor A Circuit (Bank 1)
P0345 Cylinder Identification Sensor A Circuit (Bank 2)
P0351 Ignition Coil A Primary/Secondary Circuit
P0352 Ignition Coil B Primary/Secondary Circuit
P0353 Ignition Coil C Primary/Secondary Circuit
P0354 Ignition Coil D Primary/Secondary Circuit
P0355 Ignition Coil E Primary/Secondary Circuit
P0356 Ignition Coil F Primary/Secondary Circuit
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0442 Evaporative Emission System Leak Detected (small leak)
P0443 Evaporative Emission System Purge Control Valve Circuit
P0446 Evaporative Emission System Canister Vent Valve Circuit
P0451 Evaporative Emission System Pressure Sensor Range/Performance
P0452 Evaporative Emission System Pressure Sensor/Switch Low Input
P0453 Evaporative Emission System Pressure Sensor/Switch High Input
P0454 Evaporative Emission System Pressure Sensor/Switch Intermittent Input
P0455 Evaporative Emission System Leak Detected (gross leak/no flow)
P0456 Evaporative Emission System Leak Detected (very small leak)
P0457 Evaporative Emission System Leak Detected (fuel cap loose/off)
P0460 Fuel Level Sensor A Circuit
P0461 Fuel Level Sensor A Circuit Range/Performance
P0462 Fuel Level Sensor A Circuit Low Input
P0463 Fuel Level Sensor A Circuit High Input
P0480 Fan Control Circuit
P0483 Fan Performance
P0500 Output Shaft Speed Sensor Short To Supply
P0501 Output Shaft Speed Sensor Too High Compared to Wheel Speed
P0502 Output Shaft Speed Sensor Short To Ground/Open Circuit
P0503 Vehicle Speed Sensor A Intermittent/Erratic/High
P0505 Idle Air Control System
P0506 Idle Air Control System RPM Lower Than Expected
P0507 Idle Air Control System RPM Higher Than Expected
P0532 A/C Refrigerant Pressure Sensor A Circuit Low Input
P0533 A/C Refrigerant Pressure Sensor A Circuit High Input
P0552 Power Steering Pressure Sensor/Switch Circuit Low Input
P0553 Power Steering Pressure Sensor/Switch Circuit High Input
P0562 System Voltage Low
P0563 System Voltage High
P0579 Cruise Control Multi-Function Input A Circuit Range/Performance
P0581 Cruise Control Multi-Function Input A Open Circuit
P060D Throttle Pedal Imbalance Primary to secondary
P0602 Powertrain Control Module (VID Block) Error
P0603 Powertrain Control Module Keep Alive Memory (KAM) Error
P0605 Powertrain Control Module Read Only Memory (ROM) Error
P0606 ECM / PCM Processor
P0613 TCM Processor Watchdog error
P0614 ECM / TCM IncompatibleCAN Level
P0620 Alternator Control Circuit
P0622 Alternator Field Terminal Circuit
P062F Transmission Internal module EEPROM Error
P0634 PCM / ECM / TCM Internal Temperature Too High Or Sensor Failure
P0641 Transmission Sensor Supply Voltage too High or too Low
P0645 A/C Clutch Relay Control Circuit
P0657 Transmission   Pressure Regulator and Solenoid Voltage Circuit / Open
P0658 Transmission   Pressure Regulator and Solenoid Voltage Circuit Low
P0659 Transmission   Pressure Regulator and Solenoid Voltage Circuit High
P0667 TCM Internal Temperature Sensor Too High/Low
P0701 Transmission Control System Failure. A Combination of Other Errors.
P0705 Transmission PRDN Request Invalid. CAN and Serial Line Invalid .
P0711 Transmission Fluid Temperature Sensor A Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor A Circuit Low Input
P0713 Transmission Fluid Temperature Sensor A Circuit High Input
P0714 Transmission Fluid Temperature Sensor A Circuit Intermittent
P0715 Turbine/Input Shaft Speed Sensor Circuit Short To Supply
P0716 Turbine/Input Shaft Speed Sensor Circuit Too High/Too Low
P0717 Turbine/Input Shaft Speed Sensor Circuit Short to Ground/O. Circuit
P0720 Output Shaft Speed Sensor Circuit
P0721 Output Shaft Speed Sensor Circuit Range/Performance
P0722 Output Shaft Speed Sensor Circuit No Signal
P0725 Engine Speed Input Circuit Plausibility Error
P0729 Gear 6 Incorrect Ratio. Plausibility error.
P0730 Incorrect Gear Ratio. Plausibility error.
P0731 Gear 1 Incorrect Ratio. Plausibility error.
P0732 Gear 2 Incorrect Ratio. Plausibility error.
P0733 Gear 3 Incorrect Ratio. Plausibility error.
P0734 Gear 4 Incorrect Ratio. Plausibility error.
P0735 Gear 5 Incorrect Ratio. Plausibility error.
P0736 Reverse Gear Incorrect Ratio
P0740 Torque Converter Clutch Solenoid Circuit / Open
P0741 Torque Converter Clutch Solenoid Circuit Performance Or Stuck Off
P0770 Shift Solenoid E Open Circuit
P0771 Mechanical Failure of Shift Solenoid Valve MV1 or MV2
P0780 Gear Load error Too High or No Change
P0781 Gear load error during 1-2 shift. Clutch does not close.
P0782 Gear load error during 2-3 shift. Clutch does not close.
P0783 Gear load error during 3-4 shift. Clutch does not close.
P0784 Gear load error during 4-5 shift. Clutch does not close.
P0812 Reverse Input Circuit
P0815 Upshift Switch Circuit
P0816 Downshift Switch Circuit
P081C Reverse input switch circuit error on manual transmission
P081D Neutral input switch circuit error on manual transmission
P0826 Up and Down Switch Input Circuit via CAN Error
P0829 Gear load error during 5-6 shift. Clutch does not close.
P0830 Clutch Pedal Switch A Circuit
P0833 Clutch Pedal Switch B Circuit
P0850 Parklock Sensor Fault.
P0853 Drive Switch Input Circuit
P0860 TCM To PCM Heartbeat Signal Open Circuit
P0861 TCM To PCM Heartbeat Signal Short To Ground/Open Circuit
P0862 TCM To PCM Heartbeat Signal Short To Supply
P0863 Serial Backup Line Time Out (PRND)
P0960 Pressure Control Solenoid A Circuit / Open
P0961 Pressure Control Solenoid A Circuit Too High/Low
P0962 Pressure Control Solenoid A Circuit O. Circuit/Short To Ground
P0963 Pressure Control Solenoid A Control Circuit Short to Supply
P0972 Shift Solenoid A Control Circuit Too High/Low
P0973 Shift Solenoid A Control Circuit Open Circuit/Short to Ground
P0974 Shift Solenoid A Control Circuit Short To Supply
P0975 Shift Solenoid B Control Circuit Too High/Low
P0976 Shift Solenoid B Control Circuit Open Circuit/Short to Ground
P0977 Shift Solenoid B Control Circuit Short To Supply
P0978 Shift Solenoid C Control Circuit Too High/Low
P0979 Shift Solenoid C Control Circuit Open Circuit/Short to Ground
P0980 Shift Solenoid C Control Circuit Short To Supply
P0981 Shift Solenoid D Control Circuit Too High/Low
P0982 Shift Solenoid D Control Circuit Open Circuit/Short to Ground
P0983 Shift Solenoid D Control Circuit Short to Supply
P0985 Shift Solenoid E Control Circuit Low Short to Ground/Open Circuit
P0986 Shift Solenoid E Control Circuit Short To Supply
P0998 Shift Solenoid F Control Circuit Short to Ground/Open Circuit
P0999 Shift Solenoid F Control Circuit Short To Supply
P1000 OBD Systems Readiness Test Not Complete
P1001 KOER Not Able to Complete, KOER Aborted
P1101 Mass Air Flow Sensor Out Of Self Test Range
P1116 Engine Coolant Temperature Sensor Out Of Self Test Range
P1127 Exhaust Temperature Out of Range, O2 Sensor Tests Not Completed
P115C OBDII fault code for Passive Disable Driver Interface triggered
P1233 Fuel Pump Driver Module Disabled or Off Line
P1235 Fuel Pump Driver Module Range or perfomance
P1237 Fuel Pump Secondary Circuit (Fuel Pump Driver Module)
P1270 Engine RPM or Vehicle Speed Limiter Reached
P1336 Crankshaft/Camshaft Sensor Range/Performance
P1397 Battery Voltage Out of Range During KOER/KOEO
P1450 Unable to Bleed Up Fuel Tank Vacuum
P1463 A/C Pressure Sensor Insufficient Pressure Change
P1464 A/C Demand Out Of Self Test Range
P1488 Exhaust (muffler) Bypass Control Circuit
P1500 Vehicle Speed Sensor
P1501 Vehicle Speed Sensor Out Of Self Test Range
P1550 Power Steering Pressure Sensor Out Of Self Test Range
P1572 Brake Pedal Switch Circuit
P1573 Throttle Position Not Available
P1574 Throttle Position Sensor Outputs Disagree
P1578 ETC Power Less Than Demand
P1579 ETC In Power Limiting Mode
P1585 Throttle Control Malfunction
P1587 Throttle Control Modulated Command Malfunction
P1603 Transmission EPROM Checksum Error
P1605 Battery Buffered RAM Fault (Keep Alive Memory)
P1608 Level 2 Software Monitoring (Internal Error)
P1633 Fault flag Indicating a Low/Lack Of Keep Alive Memory Voltage
P1635 Tire/Axle Out of Acceptable Range
P1639 Vehicle ID Block Corrupted, Not Programmed
P1674 Control Module Software Corrupted
P1700 Transmission Indeterminate Failure (Failed to Neutral)
P1703 Brake Switch Out Of Self Test Range
P1707 Parklock Engage/Release Failure (Without Driver Request)
P1709 Park Neutral Position Switch Out Of Self Test Range
P1712 Transmission Torque Reduction Request Signal
P1719 Engine Torque Signal (CAN) to Transmission Error
P1745 Line Pressure Solenoid Fault
P1789 Low Battery Voltage with Turbine Speed (7V-9V)
P1793 Transmission Module Battery Voltage Too Low <7V
P1794 Battery Voltage Too High >16V
P1796 CAN Controller Circuit (Bus off)
P1797 CAN TCM/ECM Position Circuit Malfunction
P1798 CAN TCM/CEM/DIM Circuit Malfunction
P1799 CAN TCM/ABS Circuit Malfunction
P1920 Engine Overspeed for Transmission. Plausibility Error
P1934 Wheel Speed Signal Failure/Not Plausable
P1935 Invalid Brake Signal
P2105 Throttle Actuator Control System – Forced Engine Shutdown
P2106 Throttle Actuator Control System – Forced Limited Power
P2107 Throttle Actuator Control Module Processor
P2111 Throttle Actuator Control System – Stuck Open
P2112 Throttle Actuator Control System – Stuck Closed
P2121 Throttle/Pedal Position Sensor/Switch D Circuit Range/Performance
P2122 Throttle/Pedal Position Sensor/Switch D Circuit Low Input
P2123 Throttle/Pedal Position Sensor/Switch D Circuit High Input
P2124 Throttle/Pedal Position Sensor/Switch D Circuit Intermittent
P2126 Throttle/Pedal Position Sensor/Switch E Circuit Range/Performance
P2127 Throttle/Pedal Position Sensor/Switch E Circuit Low Input
P2128 Throttle/Pedal Position Sensor/Switch E Circuit High Input
P2129 Throttle/Pedal Position Sensor/Switch E Circuit Intermittent
P2135 Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation
P2138 Throttle/Pedal Position Sensor/Switch D / E Voltage Correlation
P2162 Vehicle Speed Sensor A / B Correlation
P2195 O2 Sensor Signal Stuck Lean – Bank 1, Sensor 1
P2196 O2 Sensor Signal Stuck Rich – Bank 1, Sensor 1
P2197 O2 Sensor Signal Stuck Lean – Bank 2, Sensor 1
P2198 O2 Sensor Signal Stuck Rich – Bank 2, Sensor 1
P2270 O2 Sensor Signal Stuck Lean – Bank 1, Sensor 2
P2271 O2 Sensor Signal Stuck Rich – Bank 1, Sensor 2
P2272 O2 Sensor Signal Stuck Lean – Bank 2, Sensor 2
P2273 O2 Sensor Signal Stuck Rich – Bank 2, Sensor 2
P260F Neural Net Processor Reports ROM Checksum Error
P2706 Shift Solenoid F Open Circuit
P2762 Torque Converter Clutch Pressure Solenoid Circuit Too High/Low
P2763 Torque Converter Clutch Pressure Solenoid Circuit Short To Supply
P2764 Torque Converter Clutch Solenoid Circuit Short To Ground/O. Circuit
P2779 Downshift Switch Circuit
P2800 Shift By Wire Transmission Range Sensor Circuit Fault
P2801 Shift By Wire Transmission Range Sensor Circuit Range or Perfomance
P2805 Position Information Fault On Serial Backup Line
P2812 Shift Solenoid G (Park Lock) Open Circuit
P2814 Shift Solenoid G (Park Lock) Short to Ground/Open Circuit
P2815 Shift Solenoid G (Park Lock) Short to Supply

 

2 thoughts on “OBDII P Codes on an Aston Martin DB9

  1. Pingback: Lumpy Idle / Misfire on an Aston Martin DB9 – Aston 1936

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