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OBD II Fault Codes Reference Guide

The Diagnostic Trouble Code numbering follows a standardized structure. All Diagnostic Trouble Codes have a letter followed by a 4-digit number (e.g. P1234). The first letter indicates the type of code:

P = Powertrain

C = Chassis

B = Body

U = Network Communication



The remaining 4-digit number specifies the problem within that system.

P00XX Fuel and Air Metering and Auxiliary Emission Controls

P0010 “A” Camshaft Position Actuator Circuit (Bank 1)

P0011 “A” Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

P0012 “A” Camshaft Position - Timing Over-Retarded (Bank 1)

P0013 “B” Camshaft Position - Actuator Circuit (Bank 1)

P0014 “B” Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

P0015 “B” Camshaft Position -Timing Over-Retarded (Bank 1)

P0020 “A” Camshaft Position Actuator Circuit (Bank 2)

P0021 “A” Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

P0022 “A” Camshaft Position - Timing Over-Retarded (Bank 2)

P0023 “B” Camshaft Position - Actuator Circuit (Bank 2)

P0024 “B” Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

P0025 “B” Camshaft Position - Timing Over-Retarded (Bank 2)

P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1)

P0031 HO2S Heater Control Circuit Low (Bank 1 Sensor 1)

P0032 HO2S Heater Control Circuit High (Bank 1 Sensor 1)

P0033 Turbo Charger Bypass Valve Control Circuit

P0034 Turbo Charger Bypass Valve Control Circuit Low

P0035 Turbo Charger Bypass Valve Control Circuit High

P0036 HO2S Heater Control Circuit (Bank 1 Sensor 2)

P0037 HO2S Heater Control Circuit Low (Bank 1 Sensor 2)

P0038 HO2S Heater Control Circuit High (Bank 1 Sensor 2)

P0042 HO2S Heater Control Circuit (Bank 1 Sensor 3)

P0043 HO2S Heater Control Circuit Low (Bank 1 Sensor 3)

P0044 HO2S Heater Control Circuit High (Bank 1 Sensor 3)

P0050 HO2S Heater Control Circuit (Bank 2 Sensor 1)

P0051 HO2S Heater Control Circuit Low (Bank 2 Sensor 1)

P0052 HO2S Heater Control Circuit High (Bank 2 Sensor 1)

P0056 HO2S Heater Control Circuit (Bank 2 Sensor 2)

P0057 HO2S Heater Control Circuit Low (Bank 2 Sensor 2)

P0058 HO2S Heater Control Circuit High (Bank 2 Sensor 2)

P0062 HO2S Heater Control Circuit (Bank 2 Sensor 3)

P0063 HO2S Heater Control Circuit Low (Bank 2 Sensor 3)

P0064 HO2S Heater Control Circuit High (Bank 2 Sensor 3)

P0065 Air Assisted Injector Control Range/Performance

P0066 Air Assisted Injector Control Circuit or Circuit Low

P0067 Air Assisted Injector Control Circuit High

P0070 Ambient Air Temperature Sensor Circuit

P0071 Ambient Air Temperature Sensor Range/Performance

P0072 Ambient Air Temperature Sensor Circuit Low Input

P0073 Ambient Air Temperature Sensor Circuit High Input

P0074 Ambient Air Temperature Sensor Circuit Intermittent

P0075 Intake Valve Control Solenoid Circuit (Bank 1)

P0076 Intake Valve Control Solenoid Circuit Low (Bank 1)

P0077 Intake Valve Control Solenoid Circuit High (Bank 1)

P0078 Exhaust Valve Control Solenoid Circuit (Bank 1)

P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1)

P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1)

P0081 Intake valve Control Solenoid Circuit (Bank 2)

P0082 Intake Valve Control Solenoid Circuit Low (Bank 2)

P0083 Intake Valve Control Solenoid Circuit High (Bank 2)

P0084 Exhaust Valve Control Solenoid Circuit (Bank 2)

P0085 Exhaust Valve Control Solenoid Circuit Low (Bank 2)

P0086 Exhaust Valve Control Solenoid Circuit High (Bank 2)



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P01XX Fuel and Air Metering

P0100 Mass or Volume Air Flow Circuit

P0101 Mass or Volume Air Flow Circuit Range/Performanc