Posted OBDII Trouble Code Diagnosis
#1
01-09-2009 | 12:50 PM
Posted OBDII Trouble Code Diagnosis
From obd-codes.com:
Here is a breakdown of what each digit of the code means:
First Character - System
The first character identifies identifies the system related to the trouble code.
The second digit identifies whether the code is a generic code (same on all OBD-II equpped vehicles), or a manufacturer specific code.
The third digit denotes the type of sub-system that pertains to the code
These digits, along with the others, are variable, and relate to a particular problem.
Here is a breakdown of what each digit of the code means:
First Character - System
The first character identifies identifies the system related to the trouble code.
- P = Powertrain
- B = Body
- C = Chassis
- U = Undefined
The second digit identifies whether the code is a generic code (same on all OBD-II equpped vehicles), or a manufacturer specific code.
- 0 = Generic (this is the digit zero -- not the letter "O")
- 1 = Enhanced (manufacturer specific)
The third digit denotes the type of sub-system that pertains to the code
- 1 = Emission Management (Fuel or Air)
- 2 = Injector Circuit (Fuel or Air)
- 3 = Ignition or Misfire
- 4 = Emission Control
- 5 = Vehicle Speed & Idle Control
- 6 = Computer & Output Circuit
- 7 = Transmission
- 8 = Transmission
- 9 = SAE Reserved
- 0 = SAE Reserved
These digits, along with the others, are variable, and relate to a particular problem.
If you have any questions in regard to the posted information and the diagnostic procedure, create a thread in the appropriate section of the forum and try to be specific with your questions.
B Codes - Body
B2725 - Active Transfer Case Mode Switch Malfunction
C Codes - Chassis
C0265/C0266 - EBCM Motor Relay Circuit
C0267/C0268 - Pump Motor Circuit Open/Shorted
C0269/C0274 - Excessive Dump/Isolation Time
C0300 - Rear Propshaft Signal Circuit Malfunction
C0305 - Front Propshaft Speed Sensor System Malfunction
C0308 - Motor A/B Circuit Low
C0310 - Motor A/B Circuit Open
C0323 - Transfer Case Lock Circuit Low
C0327 - Encoder Circuit
C0374 - General System Malfunction
C0387 - Unable to complete shift
P Codes - Powertrain
P0016 (2002+) - Crankshaft Position - Camshaft Position Correlation
P0101 - Mass Air Flow System Performance
P0102 - Mass Air Flow Sensor Circuit Low Frequency
P0107 - Manifold Absolute Pressure [MAP] Sensor Circuit Low Voltage
P0108 - Manifold Absolute Pressure [MAP] Sensor Circuit High Voltage
P0113 - Intake Air Temperature [IAT] Sensor Circuit High Voltage
P0118 - Engine Coolant Temperature [ECT] Sensor Circuit High Voltage
P0122 - Throttle Position Sensor Circuit Low Voltage
P0123 - Throttle Position Sensor Circuit High Voltage
P0131 - HO2S Circuit Low Voltage Bank 1 Sensor 1
P0133 - HO2S Slow Response Bank 1 Sensor 1
P0134 - HO2S Circuit Insufficient Activity Bank 1 Sensor 1
P0135 - HO2S Heater Circuit Bank 1 Sensor 1
P0141 (GMT360/370) - HO2S Heater Circuit Bank 1 Sensor 2
P0143 - HO2S Circuit Low Voltage Bank 1 Sensor 3
P0146 - HO2S Circuit Insufficient Activity Bank 1 Sensor 3
P0151 - HO2S Circuit Low Voltage Bank 2 Sensor 1
P0152 - HO2S Circuit High Voltage Bank 2 Sensor 1
P0153 - HO2S Slow Response Bank 2 Sensor 1
P0154 - HO2S Insufficient Activity Bank 2 Sensor 1
P0155 - Heated Oxygen Sensor Heater Circuit (bank 2, sensor 1)
P0171 - Fuel Trim System Lean Bank 1
P0172 - Fuel Trim System Rich Bank 1
P0174 - Fuel Trim System Lean Bank 2
P0175 - Fuel Trim System Rich Bank 2
P030x - Random/Multiple Cylinder Misfire Detected
P0325 - Knock Sensor 1 Circuit
P0327 (S-series) - Knock Sensor 1 Circuit Low Input
P0327 (GMT360/370 4.2L) - Knock Sensor 1 Circuit Low Input
P0336 - CKP (crankshaft position) Sensor Circuit A Range/Performance
P0339 - CKP (crankshaft position) Sensor Circuit Intermittent
P0340 - Camshaft Position Sensor A Circuit (Bank 1 or single sensor)
P0341 - CMP (camshaft position) Sensor A Circuit Range/Performance
P0401 - Exhaust Gas Recirculation Flow Insufficient Detected
P0404 - Exhaust Gas Recirculation Control Circuit Range/Performance
P0405 - Exhaust Gas Recirculation Sensor A Circuit Low
P0410 - Secondary Air Injection System
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
P0440 - Evaporative Emission Control System
P0442 - Evaporative Emission Control System Leak Detected (small leak)
P0446 - Evaporative Emission Control System Vent Control Circuit
P0452 - Evaporative Emission Control System Pressure Sensor Low Input
P0453 - Evaporative Emission Control System Pressure Sensor High Input
P0461 - Fuel Level Sensor Circuit Range/Performance
P0462 - Fuel Level Sensor Circuit Low Voltage
P0463 - Fuel Level Sensor Circuit High Voltage
P0502 - VSS (vehicle speed sensor) Low Input
P0506/P0507 - Idle Control System RPM Lower/Higher Than Expected
P0740 - Torque Converter Clutch Circuit
P0741 (GMT360/370) - Torque Converter Clutch Circuit Performance Stuck Off
P0751 - Shift Solenoid A Performance or Stuck Off
P0753 - Shift Solenoid A Electrical
P0756 - Shift Solenoid B Performance or Stuck Off
P0758 - Shift Solenoid B Electrical
P0785 - Shift Timing Solenoid
P1107 - MAP Sensor Circuit Intermittent Low Voltage
P1111 - IAT Sensor Circuit Intermittent High Voltage
P1121 - TP Sensor Circuit Intermittent High Voltage
P1122 - TP Sensor Circuit Intermittent Low Voltage
P1133 - HO2S Insufficient Switching Bank 1 Sensor 1
P1134 - HO2S Transition Time Ratio Bank 1 Sensor 1
P1153 - HO2S Insufficient Switching Bank 2 Sensor 1
P1154 - HO2S Transition Time Ratio Bank 2 Sensor 1
P1345 - Crankshaft Position [CKP] Camshaft Position [CMP] Correlation
P1351 - Ignition Control [IC] Circuit High Voltage
P1361 - Ignition Control [IC] Circuit Low Voltage
P1404 - EGR Valve Circuit Performance Actual Position Greater Than Commanded
P1406 - EGR Valve Pintle Position Circuit
P1415 - Secondary Air Injection [AIR] System Bank 1
P1416 - Secondary Air Injection [AIR] System Bank 2
P1441 - EVAP System Flow During Non-Purge
P1637 - Generator L-Terminal
P1638 - Generator F-Terminal
P1810 - TFP Valve Position Switch Circuit
P1860 - TCC PWM Solenoid Circuit
P1870 - Transmission Component Slipping
P1875 - 4 Wheel Drive Low Switch Circuit
U Codes - Network
*none at this time*
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