P2Axx fault codes
256 generic codes from P2A00 to P2AFF, with what each means.
- P2A00 O2 Sensor Circuit Range/Performance Bank 1 Sensor 1
- P2A01 O2 Sensor Circuit Range/Performance Bank 1 Sensor 2
- P2A02 O2 Sensor Circuit Range/Performance Bank 1 Sensor 3
- P2A03 O2 Sensor Circuit Range/Performance Bank 2 Sensor 1
- P2A04 O2 Sensor Circuit Range/Performance Bank 2 Sensor 2
- P2A05 O2 Sensor Circuit Range/Performance Bank 2 Sensor 3
- P2A06 O2 Sensor Circuit Range/Performance Bank 1 Sensor 4
- P2A07 O2 Sensor Circuit Range/Performance Bank 2 Sensor 4
- P2A08 O2 Sensor Negative Voltage Bank 1 Sensor 3
- P2A09 O2 Sensor Negative Voltage Bank 2 Sensor 1
- P2A0A Manifold Absolute Pressure Sensor B Circuit
- P2A0B Manifold Absolute Pressure Sensor B Circuit Range/Performance
- P2A0C Manifold Absolute Pressure Sensor B Circuit Low
- P2A0D Manifold Absolute Pressure Sensor B Circuit High
- P2A0E Manifold Absolute Pressure Sensor B Circuit Intermittent/Erratic
- P2A0F Fuel Supply Heater Performance
- P2A10 O2 Sensor Negative Voltage Bank 2 Sensor 2
- P2A11 O2 Sensor Negative Voltage Bank 2 Sensor 3
- P2A12 Injection Pump Fuel Metering Control C (Cam/Rotor/Injector)
- P2A13 Injection Pump Fuel Metering Control C Range/Performance (Cam/Rotor/Injector)
- P2A14 Injection Pump Fuel Metering Control C Low (Cam/Rotor/Injector)
- P2A15 Injection Pump Fuel Metering Control C High (Cam/Rotor/Injector)
- P2A16 Injection Pump Fuel Metering Control D (Cam/Rotor/Injector)
- P2A17 Injection Pump Fuel Metering Control D Range/Performance (Cam/Rotor/Injector)
- P2A18 Injection Pump Fuel Metering Control D Low (Cam/Rotor/Injector)
- P2A19 Injection Pump Fuel Metering Control D High (Cam/Rotor/Injector)
- P2A1A Injection Pump Fuel Metering Control E (Cam/Rotor/Injector)
- P2A1B Injection Pump Fuel Metering Control E Range/Performance (Cam/Rotor/Injector)
- P2A1C Injection Pump Fuel Metering Control E Low (Cam/Rotor/Injector)
- P2A1D Injection Pump Fuel Metering Control E High (Cam/Rotor/Injector)
- P2A1E Injection Pump Fuel Metering Control F (Cam/Rotor/Injector)
- P2A1F Injection Pump Fuel Metering Control F Range/Performance (Cam/Rotor/Injector)
- P2A20 Injection Pump Fuel Metering Control F Low (Cam/Rotor/Injector)
- P2A21 Injection Pump Fuel Metering Control F High (Cam/Rotor/Injector)
- P2A22 Alternative Fuel Tank Shutoff Valve B Control Circuit/Open
- P2A23 Alternative Fuel Tank Shutoff Valve B Control Circuit Range/Performance
- P2A24 Alternative Fuel Tank Shutoff Valve B Control Circuit Low
- P2A25 Alternative Fuel Tank Shutoff Valve B Control Circuit High
- P2A26 Alternative Fuel Tank Shutoff Valve C Control Circuit/Open
- P2A27 Alternative Fuel Tank Shutoff Valve C Control Circuit Range/Performance
- P2A28 Alternative Fuel Tank Shutoff Valve C Control Circuit Low
- P2A29 Alternative Fuel Tank Shutoff Valve C Control Circuit High
- P2A2A Alternative Fuel Tank Shutoff Valve D Control Circuit/Open
- P2A2B Alternative Fuel Tank Shutoff Valve D Control Circuit Performance/Stuck Off
- P2A2C Alternative Fuel Tank Shutoff Valve D Control Circuit Low
- P2A2D Alternative Fuel Tank Shutoff Valve D Control Circuit High
- P2A2E Alternative Fuel Tank Shutoff Valve E Control Circuit/Open
- P2A2F Alternative Fuel Tank Shutoff Valve E Control Circuit Performance/Stuck Off
- P2A30 Alternative Fuel Tank Shutoff Valve E Control Circuit Low
- P2A31 Alternative Fuel Tank Shutoff Valve E Control Circuit High
- P2A32 AFCM Power Relay Control Circuit/Open
- P2A33 AFCM Power Relay Control Circuit Low
- P2A34 AFCM Power Relay Control Circuit High
- P2A35 AFCM Power Relay Sense Circuit
- P2A36 AFCM Power Relay Sense Circuit Low
- P2A37 AFCM Power Relay Sense Circuit High
- P2A38 O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 3
- P2A39 O2 Sensor Positive Current Control Circuit Low Bank 1 Sensor 3
- P2A3A O2 Sensor Positive Current Control Circuit High Bank 1 Sensor 3
- P2A3B O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 3
- P2A3C O2 Sensor Negative Current Control Circuit Low Bank 1 Sensor 3
- P2A3D O2 Sensor Negative Current Control Circuit High Bank 1 Sensor 3
- P2A3E Alternative Fuel Delivery Error
- P2A3F Excessive Time to Enter Alternative Fuel Control
- P2A40 Alternative Fuel System - Injector Leakage to Rail Detected
- P2A41 Alternative Fuel Tank B Pressure Sensor Circuit
- P2A42 Alternative Fuel Tank B Pressure Sensor Range/Performance
- P2A43 Alternative Fuel Tank B Pressure Sensor Circuit Low
- P2A44 Alternative Fuel Tank B Pressure Sensor Circuit High
- P2A45 Alternative Fuel Tank B Pressure Sensor Circuit Intermittent/Erratic
- P2A46 Alternative Fuel Tank C Pressure Sensor Circuit
- P2A47 Alternative Fuel Tank C Pressure Sensor Range/Performance
- P2A48 Alternative Fuel Tank C Pressure Sensor Circuit Low
- P2A49 Alternative Fuel Tank C Pressure Sensor Circuit High
- P2A4A Alternative Fuel Tank C Pressure Sensor Circuit Intermittent/Erratic
- P2A4B Alternative Fuel Temperature Sensor Circuit
- P2A4C Alternative Fuel Temperature Sensor Range/Performance
- P2A4D Alternative Fuel Temperature Sensor Circuit Low
- P2A4E Alternative Fuel Temperature Sensor Circuit High
- P2A4F Alternative Fuel Temperature Sensor Circuit Intermittent/Erratic
- P2A50 Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit
- P2A51 Alternative Fuel Vaporizer A Outlet Temperature Sensor Range/Performance
- P2A52 Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Low
- P2A53 Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit High
- P2A54 Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Intermittent/Erratic
- P2A55 Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit
- P2A56 Alternative Fuel Vaporizer B Outlet Temperature Sensor Range/Performance
- P2A57 Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Low
- P2A58 Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit High
- P2A59 Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Intermittent/Erratic
- P2A5A Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit
- P2A5B Alternative Fuel Vaporizer C Outlet Temperature Sensor Range/Performance
- P2A5C Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit Low
- P2A5D Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit High
- P2A5E Alternative Fuel Vaporizer C Outlet Temperature Sensor Circuit Intermittent/Erratic
- P2A5F Alternative Fuel Tank B Level Sensor Circuit
- P2A60 Alternative Fuel Tank B Level Sensor Range/Performance
- P2A61 Alternative Fuel Tank B Level Sensor Circuit Low
- P2A62 Alternative Fuel Tank B Level Sensor Circuit High
- P2A63 Alternative Fuel Tank B Level Sensor Circuit Intermittent/Erratic
- P2A64 Alternative Fuel Tank C Level Sensor Circuit
- P2A65 Alternative Fuel Tank C Level Sensor Range/Performance
- P2A66 Alternative Fuel Tank C Level Sensor Circuit Low
- P2A67 Alternative Fuel Tank C Level Sensor Circuit High
- P2A68 Alternative Fuel Tank C Level Sensor Circuit Intermittent/Erratic
- P2A69 Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit
- P2A6A Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Range/Performance
- P2A6B Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit Low
- P2A6C Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit High
- P2A6D Alternative Fuel Rail Pressure Regulator Inlet Pressure Sensor Circuit Intermittent/Erratic
- P2A6E Alternative Fuel Rail Pressure Regulator Inlet Pressure Too Low
- P2A6F Alternative Fuel Rail Pressure Regulator Inlet Pressure Too High
- P2A70 Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit
- P2A71 Alternative Fuel Hydraulic Fuel Pump Select Valve Control Range/Performance
- P2A72 Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Low
- P2A73 Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit High
- P2A74 Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Intermittent/Erratic
- P2A75 Alternative Fuel Hydraulic Pump Pressure Sensor Circuit
- P2A76 Alternative Fuel Hydraulic Pump Pressure Sensor Range/Performance
- P2A77 Alternative Fuel Hydraulic Pump Pressure Sensor Circuit Low
- P2A78 Alternative Fuel Hydraulic Pump Pressure Sensor Circuit High
- P2A79 Alternative Fuel Hydraulic Pump Pressure Sensor Circuit Intermittent/Erratic
- P2A7A Alternative Fuel Hydraulic Pressure Sensor Circuit
- P2A7B Alternative Fuel Hydraulic Pressure Sensor Range/Performance
- P2A7C Alternative Fuel Hydraulic Pressure Sensor Circuit Low
- P2A7D Alternative Fuel Hydraulic Pressure Sensor Circuit High
- P2A7E Alternative Fuel Hydraulic Pressure Sensor Circuit Intermittent/Erratic
- P2A7F Alternative Fuel Pump A Compression Stroke Valve Control Circuit/Open
- P2A80 Alternative Fuel Pump A Compression Stroke Valve Control Circuit Range/Performance
- P2A81 Alternative Fuel Pump A Compression Stroke Valve Control Circuit Low
- P2A82 Alternative Fuel Pump A Compression Stroke Valve Control Circuit High
- P2A83 Alternative Fuel Pump B Compression Stroke Valve Control Circuit/Open
- P2A84 Alternative Fuel Pump B Compression Stroke Valve Control Circuit Range/Performance
- P2A85 Alternative Fuel Pump B Compression Stroke Valve Control Circuit Low
- P2A86 Alternative Fuel Pump B Compression Stroke Valve Control Circuit High
- P2A87 Alternative Fuel Pump C Compression Stroke Valve Control Circuit/Open
- P2A88 Alternative Fuel Pump C Compression Stroke Valve Control Circuit Range/Performance
- P2A89 Alternative Fuel Pump C Compression Stroke Valve Control Circuit Low
- P2A8A Alternative Fuel Pump C Compression Stroke Valve Control Circuit High
- P2A8B Alternative Fuel Vaporizer A Performance
- P2A8C Alternative Fuel Vaporizer B Performance
- P2A8D Alternative Fuel Vaporizer C Performance
- P2A8E Alternative Fuel Pump A Performance
- P2A8F Alternative Fuel Pump B Performance
- P2A90 Alternative Fuel Pump C Performance
- P2A91 Alternative Fuel Tank Select Valve A Control Circuit/Open
- P2A92 Alternative Fuel Tank Select Valve A Control Performance
- P2A93 Alternative Fuel Tank Select Valve A Control Circuit Low
- P2A94 Alternative Fuel Tank Select Valve A Control Circuit High
- P2A95 Alternative Fuel Tank Select Valve B Control Circuit/Open
- P2A96 Alternative Fuel Tank Select Valve B Control Circuit Performance
- P2A97 Alternative Fuel Tank Select Valve B Control Circuit Low
- P2A98 Alternative Fuel Tank Select Valve B Control Circuit High
- P2A99 Alternative Fuel Tank Select Valve C Control Circuit/Open
- P2A9A Alternative Fuel Tank Select Valve C Control Circuit Performance
- P2A9B Alternative Fuel Tank Select Valve C Control Circuit Low
- P2A9C Alternative Fuel Tank Select Valve C Control Circuit High
- P2A9D Alternative Fuel High Pressure System Small Leak
- P2A9E Alternative Fuel Return Line Valve Control Circuit/Open
- P2A9F Alternative Fuel Return Line Valve Control Circuit Range/Performance
- P2AA0 Alternative Fuel Return Line Valve Control Circuit Low
- P2AA1 Alternative Fuel Return Line Valve Control Circuit High
- P2AA2 Alternative Fuel Return Line Insufficient Flow
- P2AA3 Cold Start EGR B Flow Insufficient Detected
- P2AA4 Cold Start EGR B Flow Excessive Detected
- P2AA5 EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 1
- P2AA6 EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 2
- P2AA7 Engine Coolant Bypass Valve B Position Sensor Circuit
- P2AA8 Engine Coolant Bypass Valve B Position Sensor Range/Performance
- P2AA9 Engine Coolant Bypass Valve B Position Sensor Circuit Low
- P2AAA Engine Coolant Bypass Valve B Position Sensor Circuit High
- P2AAB Engine Coolant Bypass Valve B Position Sensor Circuit Intermittent/Erratic
- P2AAC Diesel Fuel Presence Sensor Circuit
- P2AAD Diesel Fuel Presence Sensor Range/Performance
- P2AAE Diesel Fuel Presence Sensor Circuit Low
- P2AAF Diesel Fuel Presence Sensor Circuit High
- P2AB0 Particulate Matter Sensor Processor Performance
- P2AB1 Catalyst Heater Control Module Performance
- P2AB2 Catalyst Heater Control Module Supply Voltage
- P2AB3 Cold Start Intake Manifold Runner Control Stuck Open Bank 1
- P2AB4 Cold Start Intake Manifold Runner Control Stuck Open Bank 2
- P2AB5 Cold Start Intake Manifold Runner Control Stuck Closed Bank 1
- P2AB6 Cold Start Intake Manifold Runner Control Stuck Closed Bank 2
- P2AB7 Wastegate Position Sensor A Circuit
- P2AB8 Wastegate Position Sensor A Circuit Low
- P2AB9 Wastegate Position Sensor A Circuit High
- P2ABA Wastegate Position Sensor B Circuit
- P2ABB Wastegate Position Sensor B Circuit Low
- P2ABC Wastegate Position Sensor B Circuit High
- P2ABD Turbocharger/Supercharger Wastegate Actuator A Driver Current/Temperature Too High
- P2ABE Turbocharger/Supercharger Wastegate Actuator B Driver Current/Temperature Too High
- P2ABF Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 1
- P2AC0 Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1
- P2AC1 Intake Air O2 Sensor Reference Voltage Circuit Low Bank 1
- P2AC2 Intake Air O2 Sensor Reference Voltage Circuit High Bank 1
- P2AC3 Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2
- P2AC4 Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 2
- P2AC5 Intake Air O2 Sensor Reference Voltage Circuit Low Bank 2
- P2AC6 Intake Air O2 Sensor Reference Voltage Circuit High Bank 2
- P2AC7 Charge Air Cooler Coolant Temperature Sensor B Circuit
- P2AC8 Charge Air Cooler Coolant Temperature Sensor B Range/Performance
- P2AC9 Charge Air Cooler Coolant Temperature Sensor B Circuit Low
- P2ACA Charge Air Cooler Coolant Temperature Sensor B Circuit High
- P2ACB Charge Air Cooler Coolant Temperature Sensor B Circuit Intermittent/Erratic
- P2ACC Reductant Temperature Sensor B Circuit
- P2ACD Reductant Temperature Sensor B Range/Performance
- P2ACE Reductant Temperature Sensor B Circuit Low
- P2ACF Reductant Temperature Sensor B Circuit High
- P2AD0 Reductant Temperature Sensor B Circuit Intermittent/Erratic
- P2AD1 Throttle/Pedal Position Sensor/Switch C/G Voltage Correlation
- P2AD2 Throttle/Pedal Position Sensor/Switch B/G Voltage Correlation
- P2AD3 Throttle/Pedal Position Sensor/Switch A/G Voltage Correlation
- P2AD4 Intermediate System Voltage Low
- P2AD5 Intermediate System Voltage High
- P2AD6 Reductant Pump Motor Position Sensor Circuit
- P2AD7 Reductant Pump Motor Position Sensor Range/Performance
- P2AD8 Reductant Pump Motor Position Sensor Circuit Low
- P2AD9 Reductant Pump Motor Position Sensor Circuit High
- P2ADA Reductant Tank Temperature Sensor B Range/Performance
- P2ADB Reductant Tank Temperature Sensor B Circuit Low
- P2ADC Reductant Tank Temperature Sensor B Circuit High
- P2ADD Reductant Tank Temperature Sensor B Circuit Intermittent/Erratic
- P2ADE Reductant Tank Temperature Sensor B Circuit
- P2ADF Intake Air System Leak Bank 2
- P2AE0 Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 1
- P2AE1 Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 1
- P2AE2 Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1
- P2AE3 Intake Air O2 Sensor Pumping Current Circuit Open Bank 1
- P2AE4 Intake Air O2 Sensor Pumping Current Circuit Low Bank 1
- P2AE5 Intake Air O2 Sensor Pumping Current Circuit High Bank 1
- P2AE6 Intake Air O2 Sensor Negative Current Control Circuit Open Bank 1
- P2AE7 Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1
- P2AE8 Intake Air O2 Sensor Negative Current Control Circuit High Bank 1
- P2AE9 Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2
- P2AEA Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2
- P2AEB Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 2
- P2AEC Intake Air O2 Sensor Pumping Current Circuit Open Bank 2
- P2AED Intake Air O2 Sensor Pumping Current Circuit Low Bank 2
- P2AEE Intake Air O2 Sensor Pumping Current Circuit High Bank 2
- P2AEF Intake Air O2 Sensor Negative Current Control Circuit Open Bank 2
- P2AF0 Intake Air O2 Sensor Negative Current Control Circuit Low Bank 2
- P2AF1 Intake Air O2 Sensor Negative Current Control Circuit High Bank 2
- P2AF2 Starter Relay C Control Circuit/Open
- P2AF3 Starter Relay C Control Circuit Low
- P2AF4 Starter Relay C Control Circuit High
- P2AF5 Starter Relay C Stuck On
- P2AF6 Starter Relay C Stuck Off
- P2AF7 Starter Relay D Control Circuit/Open
- P2AF8 Starter Relay D Control Circuit Low
- P2AF9 Starter Relay D Control Circuit High
- P2AFA Starter Relay D Stuck On
- P2AFB Starter Relay D Stuck Off
- P2AFC Engine Coolant Temperature Sensor 4 Circuit
- P2AFD Engine Coolant Temperature Sensor 4 Range/Performance
- P2AFE Engine Coolant Temperature Sensor 4 Circuit Low
- P2AFF Engine Coolant Temperature Sensor 4 Circuit High