P20xx — Fuel & air metering and auxiliary emission controls
256 standardized codes from P2000 to P20FF. Manufacturer-specific codes in this range are not listed.
- P2000 NOx Adsorber Efficiency Below Threshold (Bank 1)
- P2001 NOx Adsorber Efficiency Below Threshold (Bank 2)
- P2002 Diesel Particulate Filter Efficiency Below Threshold (Bank 1)
- P2003 Diesel Particulate Filter Efficiency Below Threshold (Bank 2)
- P2004 Intake Manifold Runner Control Stuck Open (Bank 1)
- P2005 Intake Manifold Runner Control Stuck Open (Bank 2)
- P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)
- P2007 Intake Manifold Runner Control Stuck Closed (Bank 2)
- P2008 Intake Manifold Runner Control Solenoid Circuit Open (Bank 1)
- P2009 Intake Manifold Runner Control Solenoid Circuit Low (Bank 1)
- P200A Intake Manifold Runner Performance (Bank 1)
- P200B Intake Manifold Runner Performance (Bank 2)
- P200C Particulate Filter Over Temperature (Bank 1)
- P200D Particulate Filter Over Temperature (Bank 2)
- P200E Catalyst System Over Temperature (Bank 1)
- P200F Catalyst System Over Temperature (Bank 2)
- P2010 Intake Manifold Runner Control Solenoid Circuit High (Bank 1)
- P2011 Intake Manifold Runner Control Circuit/Open (Bank 2)
- P2012 Intake Manifold Runner Control Circuit Low (Bank 2)
- P2013 Intake Manifold Runner Control Circuit High (Bank 2)
- P2014 Intake Manifold Runner Position Sensor/Switch Circuit (Bank 1)
- P2015 Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)
- P2016 Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 1)
- P2017 Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 1)
- P2018 Intake Manifold Runner Position Sensor/Switch Circuit Open (Bank 2)
- P2019 Intake Manifold Runner Position Sensor/Switch Range/Performance (Bank 2)
- P201A Reductant Injection Valve Circuit Range/Performance (Bank 2 Unit 1)
- P201B Intake Manifold Runner Control Actuator Supply Voltage Low (Bank 1)
- P201C Intake Manifold Runner Control Actuator Supply Voltage Low (Bank 2)
- P201D Intake Manifold Runner Control Actuator Internal Performance (Bank 1)
- P201E Intake Manifold Runner Control Actuator Internal Performance (Bank 2)
- P201F Reductant Pump A Stuck On
- P2020 Intake Manifold Runner Position Sensor/Switch Circuit Low (Bank 2)
- P2021 Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)
- P2022 Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 2)
- P2023 Intake Manifold Runner Position Sensor/Switch Circuit Intermittent (Bank 2)
- P2024 EVAP Fuel Vapor Temperature Sensor Circuit
- P2025 EVAP Fuel Vapor Temperature Sensor Performance
- P2026 EVAP Fuel Vapor Temperature Sensor Circuit Low Voltage
- P2027 EVAP Fuel Vapor Temperature Sensor Circuit High Voltage
- P2028 EVAP Fuel Vapor Temperature Sensor Circuit Intermittent
- P2029 Fuel Fired Heater Disabled
- P202A Reductant Tank Heater Control Circuit/Open
- P202B Reductant Tank Heater Control Circuit Low
- P202C Reductant Tank Heater Control Circuit High
- P202D Reductant Leakage
- P202E Reductant Injection Valve Circuit Range/Performance (Bank 1 Unit 1)
- P202F Reductant/Regeneration Supply Control Circuit Range/Performance
- P2030 Fuel Fired Heater Performance
- P2031 Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2)
- P2032 Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2)
- P2033 Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2)
- P2034 Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 2)
- P2035 Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 2)
- P2036 Exhaust Gas Temperature Sensor Circuit High (Bank 2 Sensor 2)
- P2037 Reductant Injection Air Pressure Sensor A Circuit
- P2038 Reductant Injection Air Pressure Sensor A Circuit Range/Performance
- P2039 Reductant Injection Air Pressure Sensor A Circuit Low
- P203A Reductant Level Sensor A Circuit
- P203B Reductant Level Sensor A Circuit Range/Performance
- P203C Reductant Level Sensor A Circuit Low
- P203D Reductant Level Sensor A Circuit High
- P203E Reductant Level Sensor A Circuit Intermittent/Erratic
- P203F Reductant Level Too Low
- P2040 Reductant Injection Air Pressure Sensor A Circuit High
- P2041 Reductant Injection Air Pressure Sensor A Circuit Intermittent
- P2042 Reductant Temperature Sensor A Circuit
- P2043 Reductant Temperature Sensor A Circuit Range/Performance
- P2044 Reductant Temperature Sensor A Circuit Low
- P2045 Reductant Temperature Sensor A Circuit High
- P2046 Reductant Temperature Sensor A Circuit Intermittent
- P2047 Reductant Injection Valve Circuit/Open (Bank 1 Unit 1)
- P2048 Reductant Injection Valve Circuit Low (Bank 1 Unit 1)
- P2049 Reductant Injection Valve Circuit High (Bank 1 Unit 1)
- P204A Reductant Pressure Sensor Circuit
- P204B Reductant Pressure Sensor Circuit Range/Performance
- P204C Reductant Pressure Sensor Circuit Low
- P204D Reductant Pressure Sensor Circuit High
- P204E Reductant Pressure Sensor Circuit Intermittent/Erratic
- P204F Reductant System Performance
- P2050 Reductant Injection Valve Circuit/Open (Bank 2 Unit 1)
- P2051 Reductant Injection Valve Circuit Low (Bank 2 Unit 1)
- P2052 Reductant Injection Valve Circuit High (Bank 2 Unit 1)
- P2053 Reductant Injection Valve Circuit/Open (Bank 1 Unit 2)
- P2054 Reductant Injection Valve Circuit Low (Bank 1 Unit 2)
- P2055 Reductant Injection Valve Circuit High (Bank 1 Unit 2)
- P2056 Reductant Injection Valve Circuit/Open (Bank 2 Unit 2)
- P2057 Reductant Injection Valve Circuit Low (Bank 2 Unit 2)
- P2058 Reductant Injection Valve Circuit High (Bank 2 Unit 2)
- P2059 Reductant Injection Air Pump Control Circuit/Open
- P205A Reductant Tank Temperature Sensor A Circuit
- P205B Reductant Tank Temperature Sensor A Circuit Range/Performance
- P205C Reductant Tank Temperature Sensor A Circuit Low
- P205D Reductant Tank Temperature Sensor A Circuit High
- P205E Reductant Tank Temperature Sensor A Circuit Intermittent/Erratic
- P205F Reductant System Performance (Bank 2)
- P2060 Reductant Injection Air Pump Control Circuit Low
- P2061 Reductant Injection Air Pump Control Circuit High
- P2062 Reductant/Regeneration Supply Control Circuit/Open
- P2063 Reductant/Regeneration Supply Control Circuit Low
- P2064 Reductant/Regeneration Supply Control Circuit High
- P2065 Fuel Level Sensor B Circuit
- P2066 Fuel Level Sensor B Performance
- P2067 Fuel Level Sensor B Circuit Low
- P2068 Fuel Level Sensor B Circuit High
- P2069 Fuel Level Sensor B Circuit Intermittent
- P206A Reductant Quality Sensor Circuit
- P206B Reductant Quality Sensor Circuit Range/Performance
- P206C Reductant Quality Sensor Circuit Low
- P206D Reductant Quality Sensor Circuit High
- P206E Intake Manifold Tuning (IMT) Valve Stuck Open (Bank 2)
- P206F Intake Manifold Tuning (IMT) Valve Stuck Closed (Bank 2)
- P2070 Intake Manifold Tuning (IMT) Valve Stuck Open (Bank 1)
- P2071 Intake Manifold Tuning (IMT) Valve Stuck Closed (Bank 1)
- P2072 Throttle Actuator Control System - Ice Blockage (Bank 1)
- P2073 Manifold Absolute Pressure / Mass Air Flow - Throttle Position Correlation at Idle
- P2074 Manifold Absolute Pressure / Mass Air Flow - Throttle Position Correlation at Higher Load
- P2075 Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit (Bank 1)
- P2076 Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Range/Performance (Bank 1)
- P2077 Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 1)
- P2078 Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High (Bank 1)
- P2079 Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent (Bank 1)
- P207A Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit (Bank 2)
- P207B Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Range/Performance (Bank 2)
- P207C Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Low (Bank 2)
- P207D Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit High (Bank 2)
- P207E Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent (Bank 2)
- P207F Reductant Quality Performance
- P2080 Exhaust Gas Temperature Sensor Range/Performance (Bank 1 Sensor 1)
- P2081 Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 1 Sensor 1)
- P2082 Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 1)
- P2083 Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 2 Sensor 1)
- P2084 Exhaust Gas Temperature Sensor Range/Performance (Bank 1 Sensor 2)
- P2085 Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 1 Sensor 2)
- P2086 Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)
- P2087 Exhaust Gas Temperature Sensor Circuit Intermittent (Bank 2 Sensor 2)
- P2088 Camshaft Position A Actuator Control Circuit Low (Bank 1)
- P2089 Camshaft Position A Actuator Control Circuit High (Bank 1)
- P208A Reductant Pump A Control Circuit/Open
- P208B Reductant Pump A Control Performance/Stuck Off
- P208C Reductant Pump A Control Circuit Low
- P208D Reductant Pump A Control Circuit High
- P208E Reductant Injection Valve Stuck Closed (Bank 1 Unit 1)
- P208F Reductant Injection Valve Stuck Closed (Bank 2 Unit 1)
- P2090 Camshaft Position B Actuator Control Circuit Low (Bank 1)
- P2091 Camshaft Position B Actuator Control Circuit High (Bank 1)
- P2092 A Camshaft Position Actuator Control Circuit Low (Bank 2)
- P2093 A Camshaft Position Actuator Control Circuit High (Bank 2)
- P2094 B Camshaft Position Actuator Control Circuit Low (Bank 2)
- P2095 B Camshaft Position Actuator Control Circuit High (Bank 2)
- P2096 Post Catalyst Fuel Trim System Too Lean (Bank 1)
- P2097 Post Catalyst Fuel Trim System Too Rich (Bank 1)
- P2098 Post Catalyst Fuel Trim System Too Lean (Bank 2)
- P2099 Post Catalyst Fuel Trim System Too Rich (Bank 2)
- P209A Reductant Injection Air Pressure Sensor B Circuit
- P209B Reductant Injection Air Pressure Sensor B Circuit Range/Performance
- P209C Reductant Injection Air Pressure Sensor B Circuit Low
- P209D Reductant Injection Air Pressure Sensor B Circuit High
- P209E Reductant Injection Air Pressure Sensor A/B Correlation
- P209F Reductant Tank Heater Control Circuit Performance
- P20A0 Reductant Purge Control Valve A Circuit/Open
- P20A1 Reductant Purge Control Valve A Performance
- P20A2 Reductant Purge Control Valve A Circuit Low
- P20A3 Reductant Purge Control Valve A Circuit High
- P20A4 Reductant Purge Control Valve A Stuck Open
- P20A5 Reductant Purge Control Valve A Stuck Closed
- P20A6 Reductant Injection Air Pressure Control Valve Circuit/Open
- P20A7 Reductant Injection Air Pressure Control Valve Performance
- P20A8 Reductant Injection Air Pressure Control Valve Circuit Low
- P20A9 Reductant Injection Air Pressure Control Valve Circuit High
- P20AA Reductant Injection Air Pressure Control Valve Stuck Open
- P20AB Reductant Injection Air Pressure Control Valve Stuck Closed
- P20AC Reductant Metering Unit Temperature Sensor Circuit
- P20AD Reductant Metering Unit Temperature Sensor Circuit Range/Performance
- P20AE Reductant Metering Unit Temperature Sensor Circuit Low
- P20AF Reductant Metering Unit Temperature Sensor Circuit High
- P20B0 Reductant Metering Unit Temperature Sensor Circuit Intermittent/Erratic
- P20B1 Reductant Heater Coolant Control Valve Circuit/Open
- P20B2 Reductant Heater Coolant Control Valve Performance/Stuck Open
- P20B3 Reductant Heater Coolant Control Valve Circuit Low
- P20B4 Reductant Heater Coolant Control Valve Circuit High
- P20B5 Reductant Metering Unit Heater Control Circuit/Open
- P20B6 Reductant Metering Unit Heater Control Circuit Performance
- P20B7 Reductant Metering Unit Heater Control Circuit Low
- P20B8 Reductant Metering Unit Heater Control Circuit High
- P20B9 Reductant Heater A Control Circuit/Open
- P20BA Reductant Heater A Control Performance
- P20BB Reductant Heater A Control Circuit Low
- P20BC Reductant Heater A Control Circuit High
- P20BD Reductant Heater B Control Circuit/Open
- P20BE Reductant Heater B Control Circuit Performance
- P20BF Reductant Heater B Control Circuit Low
- P20C0 Reductant Heater B Control Circuit High
- P20C1 Reductant Heater C Control Circuit/Open
- P20C2 Reductant Heater C Control Circuit Performance
- P20C3 Reductant Heater C Control Circuit Low
- P20C4 Reductant Heater C Control Circuit High
- P20C5 Reductant Heater D Control Circuit/Open
- P20C6 Reductant Heater D Control Circuit Performance
- P20C7 Reductant Heater D Control Circuit Low
- P20C8 Reductant Heater D Control Circuit High
- P20C9 Reductant Control Module Requested MIL Illumination
- P20CA Reductant Injection Air Pressure Leakage
- P20CB Exhaust Aftertreatment Fuel Injector A Control Circuit/Open
- P20CC Exhaust Aftertreatment Fuel Injector A Control Performance
- P20CD Exhaust Aftertreatment Fuel Injector A Control Circuit Low
- P20CE Exhaust Aftertreatment Fuel Injector A Control Circuit High
- P20CF Exhaust Aftertreatment Fuel Injector A Stuck Open
- P20D0 Exhaust Aftertreatment Fuel Injector A Stuck Closed
- P20D1 Exhaust Aftertreatment Fuel Injector B Control Circuit/Open
- P20D2 Exhaust Aftertreatment Fuel Injector B Control Performance
- P20D3 Exhaust Aftertreatment Fuel Injector B Control Circuit Low
- P20D4 Exhaust Aftertreatment Fuel Injector B Control Circuit High
- P20D5 Exhaust Aftertreatment Fuel Injector B Stuck Open
- P20D6 Exhaust Aftertreatment Fuel Injector B Stuck Closed
- P20D7 Exhaust Aftertreatment Fuel Supply Control Circuit/Open
- P20D8 Exhaust Aftertreatment Fuel Supply Control Performance
- P20D9 Exhaust Aftertreatment Fuel Supply Control Circuit Low
- P20DA Exhaust Aftertreatment Fuel Supply Control Circuit High
- P20DB Exhaust Aftertreatment Fuel Supply Control Stuck Open
- P20DC Exhaust Aftertreatment Fuel Supply Control Stuck Closed
- P20DD Exhaust Aftertreatment Fuel Pressure Sensor Circuit
- P20DE Exhaust Aftertreatment Fuel Pressure Sensor Circuit Range/Performance
- P20DF Exhaust Aftertreatment Fuel Pressure Sensor Circuit Low
- P20E0 Exhaust Aftertreatment Fuel Pressure Sensor Circuit High
- P20E1 Exhaust Aftertreatment Fuel Pressure Sensor Circuit Intermittent/Erratic
- P20E2 Exhaust Gas Temperature Sensor 1/2 Correlation (Bank 1)
- P20E3 Exhaust Gas Temperature Sensor 1/3 Correlation (Bank 1)
- P20E4 Exhaust Gas Temperature Sensor 2/3 Correlation (Bank 1)
- P20E5 Exhaust Gas Temperature Sensor 1/2 Correlation (Bank 2)
- P20E6 Reductant Injection Air Pressure Too Low
- P20E7 Reductant Injection Air Pressure Too High
- P20E8 Reductant Pressure Too Low
- P20E9 Reductant Pressure Too High
- P20EA Reductant Control Module Power Relay De-Energized Performance - Too Early
- P20EB Reductant Control Module Power Relay De-Energized Performance - Too Late
- P20EC SCR NOx Catalyst Over Temperature (Bank 1)
- P20ED SCR NOx Pre-Catalyst Over Temperature (Bank 1)
- P20EE SCR NOx Catalyst Efficiency Below Threshold (Bank 1)
- P20EF SCR NOx Pre-Catalyst Efficiency Below Threshold (Bank 1)
- P20F0 SCR NOx Catalyst Over Temperature (Bank 2)
- P20F1 SCR NOx Pre-Catalyst Over Temperature (Bank 2)
- P20F2 SCR NOx Catalyst Efficiency Below Threshold (Bank 2)
- P20F3 SCR NOx Pre-Catalyst Efficiency Below Threshold (Bank 2)
- P20F4 Reductant Consumption Too Low
- P20F5 Reductant Consumption Too High
- P20F6 Reductant Injection Valve Stuck Open (Bank 1 Unit 1)
- P20F7 Reductant Injection Valve Stuck Open (Bank 2 Unit 1)
- P20F8 Intake Manifold Runner Control Circuit Performance (Bank 1)
- P20F9 Intake Manifold Runner Control Circuit Performance (Bank 2)
- P20FA Reductant Pump B Control Circuit/Open
- P20FB Reductant Pump B Control Performance/Stuck Off
- P20FC Reductant Pump B Control Circuit Low
- P20FD Reductant Pump B Control Circuit High
- P20FE Reductant Metering Unit 1 Performance
- P20FF Reductant Control Module Performance