P2Axx — Oxygen sensors and fuel trim

256 codes in this range. Generic powertrain codes — injector, sensor and emissions circuits.

• P2A00O2 Sensor Circuit Range/Performance Bank 1 Sensor 1
• P2A01O2 Sensor Circuit Range/Performance Bank 1 Sensor 2
• P2A02O2 Sensor Circuit Range/Performance Bank 1 Sensor 3
• P2A03O2 Sensor Circuit Range/Performance Bank 2 Sensor 1
• P2A04O2 Sensor Circuit Range/Performance Bank 2 Sensor 2
• P2A05O2 Sensor Circuit Range/Performance Bank 2 Sensor 3
• P2A06O2 Sensor Circuit Range/Performance Bank 1 Sensor 4
• P2A07O2 Sensor Circuit Range/Performance Bank 2 Sensor 4
• P2A08O2 Sensor Negative Voltage Bank 1 Sensor 3
• P2A09O2 Sensor Negative Voltage Bank 2 Sensor 1
• P2A0AManifold Absolute Pressure Sensor B Circuit
• P2A0BManifold Absolute Pressure Sensor B Circuit Range/Performance
• P2A0CManifold Absolute Pressure Sensor B Circuit Low
• P2A0DManifold Absolute Pressure Sensor B Circuit High
• P2A0EManifold Absolute Pressure Sensor B Circuit Intermittent/Erratic
• P2A0FFuel Supply Heater Performance
• P2A10O2 Sensor Negative Voltage Bank 2 Sensor 2
• P2A11O2 Sensor Negative Voltage Bank 2 Sensor 3
• P2A12Injection Pump Fuel Metering Control C (Cam/Rotor/Injector)
• P2A13Injection Pump Fuel Metering Control C Range/Performance (Cam/Rotor/Injector)
• P2A14Injection Pump Fuel Metering Control C Low (Cam/Rotor/Injector)
• P2A15Injection Pump Fuel Metering Control C High (Cam/Rotor/Injector)
• P2A16Injection Pump Fuel Metering Control D (Cam/Rotor/Injector)
• P2A17Injection Pump Fuel Metering Control D Range/Performance (Cam/Rotor/Injector)
• P2A18Injection Pump Fuel Metering Control D Low (Cam/Rotor/Injector)
• P2A19Injection Pump Fuel Metering Control D High (Cam/Rotor/Injector)
• P2A1AInjection Pump Fuel Metering Control E (Cam/Rotor/Injector)
• P2A1BInjection Pump Fuel Metering Control E Range/Performance (Cam/Rotor/Injector)
• P2A1CInjection Pump Fuel Metering Control E Low (Cam/Rotor/Injector)
• P2A1DInjection Pump Fuel Metering Control E High (Cam/Rotor/Injector)
• P2A1EInjection Pump Fuel Metering Control F (Cam/Rotor/Injector)
• P2A1FInjection Pump Fuel Metering Control F Range/Performance (Cam/Rotor/Injector)
• P2A20Injection Pump Fuel Metering Control F Low (Cam/Rotor/Injector)
• P2A21Injection Pump Fuel Metering Control F High (Cam/Rotor/Injector)
• P2A22Alternative Fuel Tank Shutoff Valve B Control Circuit/Open
• P2A23Alternative Fuel Tank Shutoff Valve B Control Circuit Performance/Stuck Off
• P2A24Alternative Fuel Tank Shutoff Valve B Control Circuit Low
• P2A25Alternative Fuel Tank Shutoff Valve B Control Circuit High
• P2A26Alternative Fuel Tank Shutoff Valve C Control Circuit/Open
• P2A27Alternative Fuel Tank Shutoff Valve C Control Circuit Performance/Stuck Off
• P2A28Alternative Fuel Tank Shutoff Valve C Control Circuit Low
• P2A29Alternative Fuel Tank Shutoff Valve C Control Circuit High
• P2A2AAlternative Fuel Tank Shutoff Valve D Control Circuit/Open
• P2A2BAlternative Fuel Tank Shutoff Valve D Control Circuit Performance/Stuck Off
• P2A2CAlternative Fuel Tank Shutoff Valve D Control Circuit Low
• P2A2DAlternative Fuel Tank Shutoff Valve D Control Circuit High
• P2A2EAlternative Fuel Tank Shutoff Valve E Control Circuit/Open
• P2A2FAlternative Fuel Tank Shutoff Valve E Control Circuit Performance/Stuck Off
• P2A30Alternative Fuel Tank Shutoff Valve E Control Circuit Low
• P2A31Alternative Fuel Tank Shutoff Valve E Control Circuit High
• P2A32AFCM Power Relay Control Circuit/Open
• P2A33AFCM Power Relay Control Circuit Low
• P2A34AFCM Power Relay Control Circuit High
• P2A35AFCM Power Relay Sense Circuit
• P2A36AFCM Power Relay Sense Circuit Low
• P2A37AFCM Power Relay Sense Circuit High
• P2A38O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 3
• P2A39O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 3
• P2A3AO2 Sensor Positive Current Control Circuit High Bank 1 Sensor 3
• P2A3BO2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 3
• P2A3CO2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 3
• P2A3DO2 Sensor Negative Current Control Circuit High Bank 1 Sensor 3
• P2A3EAlternative Fuel Delivery Error
• P2A3FExcessive Time to Enter Alternative Fuel Control
• P2A40Alternative Fuel System - Injector Leakage to Rail Detected
• P2A41Alternative Fuel Tank B Pressure Sensor Circuit
• P2A42Alternative Fuel Tank B Pressure Sensor Range/Performance
• P2A43Alternative Fuel Tank B Pressure Sensor Circuit Low
• P2A44Alternative Fuel Tank B Pressure Sensor Circuit High
• P2A45Alternative Fuel Tank B Pressure Sensor Circuit Intermittent/Erratic
• P2A46Alternative Fuel Tank C Pressure Sensor Circuit
• P2A47Alternative Fuel Tank C Pressure Sensor Range/Performance
• P2A48Alternative Fuel Tank C Pressure Sensor Circuit Low
• P2A49Alternative Fuel Tank C Pressure Sensor Circuit High
• P2A4AAlternative Fuel Tank C Pressure Sensor Circuit Intermittent/Erratic
• P2A4BAlternative Fuel Temperature Sensor Circuit
• P2A4CAlternative Fuel Temperature Sensor Range/Performance
• P2A4DAlternative Fuel Temperature Sensor Circuit Low
• P2A4EAlternative Fuel Temperature Sensor Circuit High
• P2A4FAlternative Fuel Temperature Sensor Circuit Intermittent/Erratic
• P2A50Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit
• P2A51Alternative Fuel Vaporizer A Outlet Temperature Sensor Range/Performance
• P2A52Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Low
• P2A53Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit High
• P2A54Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Intermittent/Erratic
• P2A55Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit
• P2A56Alternative Fuel Vaporizer B Outlet Temperature Sensor Range/Performance
• P2A57Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Low
• P2A58Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit High
• P2A59Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Intermittent/Erratic
• P2A5AAlternative Fuel Vaporizer C Outlet Temperature Sensor Circuit
• P2A5BAlternative Fuel Vaporizer C Outlet Temperature Sensor Range/Performance
• P2A5CAlternative Fuel Vaporizer C Outlet Temperature Sensor Circuit Low
• P2A5DAlternative Fuel Vaporizer C Outlet Temperature Sensor Circuit High
• P2A5EAlternative Fuel Vaporizer C Outlet Temperature Sensor Circuit Intermittent/Erratic
• P2A5FAlternative Fuel Tank B Level Sensor Circuit
• P2A60Alternative Fuel Tank B Level Sensor Range/Performance
• P2A61Alternative Fuel Tank B Level Sensor Circuit Low
• P2A62Alternative Fuel Tank B Level Sensor Circuit High
• P2A63Alternative Fuel Tank B Level Sensor Circuit Intermittent/Erratic
• P2A64Alternative Fuel Tank C Level Sensor Circuit
• P2A65Alternative Fuel Tank C Level Sensor Range/Performance
• P2A66Alternative Fuel Tank C Level Sensor Circuit Low
• P2A67Alternative Fuel Tank C Level Sensor Circuit High
• P2A68Alternative Fuel Tank C Level Sensor Circuit Intermittent/Erratic
• P2A69Alternative Fuel Rail Pressure Regulator Pressure Sensor Circuit
• P2A6AAlternative Fuel Rail Pressure Regulator Pressure Sensor Range/Performance
• P2A6BAlternative Fuel Rail Pressure Regulator Pressure Sensor Circuit Low
• P2A6CAlternative Fuel Rail Pressure Regulator Pressure Sensor Circuit High
• P2A6DAlternative Fuel Rail Pressure Regulator Pressure Sensor Circuit Intermittent/Erratic
• P2A6EAlternative Fuel Rail Pressure Regulator Inlet Pressure Too Low
• P2A6FAlternative Fuel Rail Pressure Regulator Inlet Pressure Too High
• P2A70Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit
• P2A71Alternative Fuel Hydraulic Fuel Pump Select Valve Control Range/Performance
• P2A72Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Low
• P2A73Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit High
• P2A74Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Intermittent/Erratic
• P2A75Alternative Fuel Hydraulic Pump Pressure Sensor Circuit
• P2A76Alternative Fuel Hydraulic Pump Pressure Sensor Range/Performance
• P2A77Alternative Fuel Hydraulic Pump Pressure Sensor Circuit Low
• P2A78Alternative Fuel Hydraulic Pump Pressure Sensor Circuit High
• P2A79Alternative Fuel Hydraulic Pump Pressure Sensor Circuit Intermittent/Erratic
• P2A7AAlternative Fuel Hydraulic Pressure Sensor Circuit
• P2A7BAlternative Fuel Hydraulic Pressure Sensor Range/Performance
• P2A7CAlternative Fuel Hydraulic Pressure Sensor Circuit Low
• P2A7DAlternative Fuel Hydraulic Pressure Sensor Circuit High
• P2A7EAlternative Fuel Hydraulic Pressure Sensor Circuit Intermittent/Erratic
• P2A7FAlternative Fuel Pump A Compression Stroke Valve Control Circuit/Open
• P2A80Alternative Fuel Pump A Compression Stroke Valve Control Circuit Range/Performance
• P2A81Alternative Fuel Pump A Compression Stroke Valve Control Circuit Low
• P2A82Alternative Fuel Pump A Compression Stroke Valve Control Circuit High
• P2A83Alternative Fuel Pump B Compression Stroke Valve Control Circuit/Open
• P2A84Alternative Fuel Pump B Compression Stroke Valve Control Circuit Range/Performance
• P2A85Alternative Fuel Pump B Compression Stroke Valve Control Circuit Low
• P2A86Alternative Fuel Pump B Compression Stroke Valve Control Circuit High
• P2A87Alternative Fuel Pump C Compression Stroke Valve Control Circuit/Open
• P2A88Alternative Fuel Pump C Compression Stroke Valve Control Circuit Range/Performance
• P2A89Alternative Fuel Pump C Compression Stroke Valve Control Circuit Low
• P2A8AAlternative Fuel Pump C Compression Stroke Valve Control Circuit High
• P2A8BAlternative Fuel Vaporizer A Performance
• P2A8CAlternative Fuel Vaporizer B Performance
• P2A8DAlternative Fuel Vaporizer C Performance
• P2A8EAlternative Fuel Pump A Performance
• P2A8FAlternative Fuel Pump B Performance
• P2A90Alternative Fuel Pump C Performance
• P2A91Alternative Fuel Tank Select Valve A Control Circuit/Open
• P2A92Alternative Fuel Tank Select Valve A Control Performance
• P2A93Alternative Fuel Tank Select Valve A Control Circuit Low
• P2A94Alternative Fuel Tank Select Valve A Control Circuit High
• P2A95Alternative Fuel Tank Select Valve B Control Circuit/Open
• P2A96Alternative Fuel Tank Select Valve B Control Circuit Performance
• P2A97Alternative Fuel Tank Select Valve B Control Circuit Low
• P2A98Alternative Fuel Tank Select Valve B Control Circuit High
• P2A99Alternative Fuel Tank Select Valve C Control Circuit/Open
• P2A9AAlternative Fuel Tank Select Valve C Control Circuit Performance
• P2A9BAlternative Fuel Tank Select Valve C Control Circuit Low
• P2A9CAlternative Fuel Tank Select Valve C Control Circuit High
• P2A9DAlternative Fuel High Pressure System Small Leak
• P2A9EAlternative Fuel Return Line Valve Control Circuit/Open
• P2A9FAlternative Fuel Return Line Valve Control Circuit Range/Performance
• P2AA0Alternative Fuel Return Line Valve Control Circuit Low
• P2AA1Alternative Fuel Return Line Valve Control Circuit High
• P2AA2Alternative Fuel Return Line Insufficient Flow
• P2AA3Cold Start EGR B Flow Insufficient Detected
• P2AA4Cold Start EGR B Flow Excessive Detected
• P2AA5EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 1
• P2AA6EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 2
• P2AA7Engine Coolant Bypass Valve B Position Sensor Circuit
• P2AA8Engine Coolant Bypass Valve B Position Sensor Range/Performance
• P2AA9Engine Coolant Bypass Valve B Position Sensor Circuit Low
• P2AAAEngine Coolant Bypass Valve B Position Sensor Circuit High
• P2AABEngine Coolant Bypass Valve B Position Sensor Circuit Intermittent/Erratic
• P2AACDiesel Fuel Presence Sensor Circuit
• P2AADDiesel Fuel Presence Sensor Range/Performance
• P2AAEDiesel Fuel Presence Sensor Circuit Low
• P2AAFDiesel Fuel Presence Sensor Circuit High
• P2AB0Particulate Matter Sensor Processor Performance
• P2AB1Catalyst Heater Control Module Performance
• P2AB2Catalyst Heater Control Module Supply Voltage
• P2AB3Cold Start Intake Manifold Runner Control Stuck Open Bank 1
• P2AB4Cold Start Intake Manifold Runner Control Stuck Open Bank 2
• P2AB5Cold Start Intake Manifold Runner Control Stuck Closed Bank 1
• P2AB6Cold Start Intake Manifold Runner Control Stuck Closed Bank 2
• P2AB7Wastegate Position Sensor A Circuit
• P2AB8Wastegate Position Sensor A Circuit Low
• P2AB9Wastegate Position Sensor A Circuit High
• P2ABAWastegate Position Sensor B Circuit
• P2ABBWastegate Position Sensor B Circuit Low
• P2ABCWastegate Position Sensor B Circuit High
• P2ABDTurbocharger/Supercharger Wastegate Actuator A Driver Current/Temperature Too High
• P2ABETurbocharger/Supercharger Wastegate Actuator B Driver Current/Temperature Too High
• P2ABFIntake Air O2 Sensor Reference Voltage Circuit/Open Bank 1
• P2AC0Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1
• P2AC1Intake Air O2 Sensor Reference Voltage Circuit Low Bank 1
• P2AC2Intake Air O2 Sensor Reference Voltage Circuit High Bank 1
• P2AC3Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2
• P2AC4Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 2
• P2AC5Intake Air O2 Sensor Reference Voltage Circuit Low Bank 2
• P2AC6Intake Air O2 Sensor Reference Voltage Circuit High Bank 2
• P2AC7Charge Air Cooler Coolant Temperature Sensor B Circuit
• P2AC8Charge Air Cooler Coolant Temperature Sensor B Range/Performance
• P2AC9Charge Air Cooler Coolant Temperature Sensor B Circuit Low
• P2ACACharge Air Cooler Coolant Temperature Sensor B Circuit High
• P2ACBCharge Air Cooler Coolant Temperature Sensor B Circuit Intermittent/Erratic
• P2ACCReductant Temperature Sensor B Circuit
• P2ACDReductant Temperature Sensor B Range/Performance
• P2ACEReductant Temperature Sensor B Circuit Low
• P2ACFReductant Temperature Sensor B Circuit High
• P2AD0Reductant Temperature Sensor B Circuit Intermittent/Erratic
• P2AD1Throttle/Pedal Position Sensor/Switch C/G Voltage Correlation
• P2AD2Throttle/Pedal Position Sensor/Switch B/G Voltage Correlation
• P2AD3Throttle/Pedal Position Sensor/Switch A/G Voltage Correlation
• P2AD4Intermediate System Voltage Low
• P2AD5Intermediate System Voltage High
• P2AD6Reductant Pump Motor Position Sensor Circuit
• P2AD7Reductant Pump Motor Position Sensor Range/Performance
• P2AD8Reductant Pump Motor Position Sensor Circuit Low
• P2AD9Reductant Pump Motor Position Sensor Circuit High
• P2ADAReductant Tank Temperature Sensor B Range/Performance
• P2ADBReductant Tank Temperature Sensor B Circuit Low
• P2ADCReductant Tank Temperature Sensor B Circuit High
• P2ADDReductant Tank Temperature Sensor B Circuit Intermittent/Erratic
• P2ADEReductant Tank Temperature Sensor B Circuit
• P2ADFIntake Air System Leak Bank 2
• P2AE0Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 1
• P2AE1Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 1
• P2AE2Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1
• P2AE3Intake Air O2 Sensor Pumping Current Circuit Open Bank 1
• P2AE4Intake Air O2 Sensor Pumping Current Circuit Low Bank 1
• P2AE5Intake Air O2 Sensor Pumping Current Circuit High Bank 1
• P2AE6Intake Air O2 Sensor Negative Current Control Circuit Open Bank 1
• P2AE7Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1
• P2AE8Intake Air O2 Sensor Negative Current Control Circuit High Bank 1
• P2AE9Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2
• P2AEAIntake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2
• P2AEBIntake Air O2 Sensor Pumping Current Trim Circuit High Bank 2
• P2AECIntake Air O2 Sensor Pumping Current Circuit Open Bank 2
• P2AEDIntake Air O2 Sensor Pumping Current Circuit Low Bank 2
• P2AEEIntake Air O2 Sensor Pumping Current Circuit High Bank 2
• P2AEFIntake Air O2 Sensor Negative Current Control Circuit Open Bank 2
• P2AF0Intake Air O2 Sensor Negative Current Control Circuit Low Bank 2
• P2AF1Intake Air O2 Sensor Negative Current Control Circuit High Bank 2
• P2AF2Starter Relay C Control Circuit/Open
• P2AF3Starter Relay C Control Circuit Low
• P2AF4Starter Relay C Control Circuit High
• P2AF5Starter Relay C Stuck On
• P2AF6Starter Relay C Stuck Off
• P2AF7Starter Relay D Control Circuit/Open
• P2AF8Starter Relay D Control Circuit Low
• P2AF9Starter Relay D Control Circuit High
• P2AFAStarter Relay D Stuck On
• P2AFBStarter Relay D Stuck Off
• P2AFCEngine Coolant Temperature Sensor 4 Circuit
• P2AFDEngine Coolant Temperature Sensor 4 Range/Performance
• P2AFEEngine Coolant Temperature Sensor 4 Circuit Low
• P2AFFEngine Coolant Temperature Sensor 4 Circuit High