P20xx OBD-II Trouble Codes
P20xx OBD-II Trouble Codes
This is a list of P20xx OBD-II Diagnostic Trouble Codes (DTCs). They all start with P20 (eg P2000, P2004, etc.). The first two P2 characters denote that they are generic transmission-related codes. The codes below are considered generic as they apply to all makes / models of OBD-II vehicles, although the specific diagnostic and repair steps may differ.
We have literally thousands of other codes listed on the site, use the links below to navigate to other code lists. If you can't find what you are looking for, use our search engine or ask a question on the forums.
Quick links to other trouble codes (starting with): P00xx: P01xx: P02xx: P03xx: P04xx: P05xx: P06xx: P07xx: P08xx: P09xx: P0Axx: P0Bxx: P0Cxx: P1 ***: P20xx: P21xx: P22xx: P23xx: P24xx: P25xx: P26xx: P27xx: P28 / P29 / P2A / P2B: P34xx
For all other codes not listed in the links above or below, see our list of major trouble codes.
P2000-P2099 Fault codes
- 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 unit stuck open bank 1
- P2005 Intake manifold runner control unit stuck open bank 2
- P2006 Intake manifold runner control unit stuck in closed position, bank 1
- P2007 Intake manifold runner control unit stuck in closed position, bank 2
- P2008 Intake Manifold Slider Control Circuit / Open Bank 1
- P2009 Intake Manifold Slider Control Circuit Bank 1 Low
- P200A Intake Manifold Runner Performance Bank 1
- P200B Intake Manifold Runner Performance Bank 2
- Diesel Particulate Filter P200C Overheating Bank 1
- P200D Diesel Particulate Filter Overheating Bank 2
- P200E catalyst system overheating, bank 1
- P200F Catalyst System Over Temperature Bank 2
- P2010 Intake Manifold Slider Control Circuit High Bank 1
- P2011 Intake Manifold Slider Control Circuit / Open Bank 2
- P2012 Intake Manifold Slider Control Circuit Bank 2 Low
- P2013 Intake Manifold Slider Control Circuit High Bank 2
- P2014 Intake Manifold Impeller Position Sensor / Switch Circuit Bank 1
- P2015 Intake Manifold Impeller Position Sensor / Switch Circuit Range / Performance Bank 1
- P2016 Intake Manifold Impeller Position Sensor / Switch Circuit Low Bank 1
- P2017 Intake Manifold Impeller Position Sensor / Switch Circuit Bank 1
- P2018 Intake Manifold Impeller Position Sensor / Switch Circuit Intermittent Bank 1
- P2019 Intake Manifold Impeller Position Sensor / Switch Circuit Bank 2
- P201A Reductant Injection Valve Circuit Out of Range / Performance Bank 2 Bank 1
- P201B, P201C, P201D, P201E, P201F ISO / SAE Reserved
- P2020 Intake Manifold Impeller Position Sensor / Switch Circuit Range / Performance Bank 2
- P2021 Intake Manifold Impeller Position Sensor / Switch Circuit Low Bank 2
- P2022 Intake Manifold Impeller Position Sensor / Switch Circuit Bank 2
- P2023 Intake Manifold Impeller Position Sensor / Switch Circuit Intermittent Bank 2
- P2024 Evaporative emission (EVAP) system fuel vapor temperature sensor circuit
- P2025 Evaporative Fuel Temperature (EVAP) Sensor Performance
- P2026 Evaporative emission (EVAP) system fuel vapor temperature sensor circuit low voltage
- P2027 Evaporative emission (EVAP) system, fuel vapor temperature sensor circuit high voltage
- P2028 Evaporative Fuel Temperature (EVAP) Sensor Circuit Malfunction
- P2029 Fuel Heater Disabled
- P202A Reductant tank heater control circuit / open
- P202B Low rate of the reducing agent tank heater control circuit
- P202C Reductant tank heater control circuit - circuit high
- P202D Leakage of reductant
- P202E Reductant Injection Valve Circuit Out of Range / Performance Bank 1 Bank 1
- P202F Reductant / Regeneration Control Circuit Out of Range / Performance
- P2030 Fuel Heater Performance
- P2031 Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2
- P2032 Low level of the exhaust gas temperature sensor circuit, bank 1, sensor 2
- P2033 Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 2 High
- P2034 Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2
- P2035 Low level of the exhaust gas temperature sensor circuit, bank 2, sensor 2
- P2036 Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2 High
- P2037 Reductant Injection Air Pressure Sensor "A"
- P2038 Reductant Injection Air Pressure Sensor "A" Circuit Range / Performance
- P2039 Reductant injection system air pressure sensor "A", low signal
- P203A Reductant Level Sensor Circuit
- P203B Reductant Level Sensor Circuit Range / Performance
- P203C Low rate of reductant level sensor circuit
- P203D Reductant Level Sensor Circuit High Signal
- P203E Reductant Level Sensor Circuit Unstable / Unstable
- P203F Reductant level too low
- P2040 Reductant Injection Air Pressure Sensor "A" Circuit High
- P2041 Reductant Injection Air Pressure Sensor Circuit Malfunction "A"
- P2042 Reductant Temperature Sensor Circuit
- P2043 Reductant Temperature Sensor Circuit Out of Range / Performance
- P2044 Low Reductant Temperature Sensor Circuit
- P2045 Reductant Temperature Sensor Circuit High
- P2046 Intermittent Reductant Temperature Sensor Circuit
- P2047 Reductant Injection Valve Circuit / Open, Bank 1, Bank 1
- P2048 Reductant Injection Valve Circuit Low, Bank 1, Bank 1
- P2049 Reductant Injection Valve Circuit Bank 1 Bank 1
- P204A Reductant Pressure Sensor Circuit
- P204B Reductant Pressure Sensor Circuit Range / Performance
- P204C Low rate of reducing agent pressure sensor circuit
- P204D Reductant Pressure Sensor Circuit High
- P204E Unstable / unstable reductant pressure sensor circuit
- P204F Reductant System Efficiency Bank 1
- P2050 Reductant Injection Valve Circuit / Open, Bank 2, Bank 1
- P2051 Reductant Injection Valve Circuit Low, Bank 2, Bank 1
- P2052 Reductant Injection Valve Circuit Bank 2 Bank 1
- P2053 Reductant Injection Valve Circuit / Open, Bank 1, Bank 2
- P2054 Reductant Injection Valve Circuit Low, Bank 1, Bank 2
- P2055 Reductant Injection Valve Circuit Bank 1 Bank 2
- P2056 Reductant Injection Valve Circuit / Open, Bank 2, Bank 2
- P2057 Reductant Injection Valve Circuit Low, Bank 2, Bank 2
- P2058 Reductant Injection Valve Circuit Bank 2 Bank 2
- P2059 Reductant Injection Air Pump Control Circuit / Open
- P205A Reductant Tank Temperature Sensor Circuit
- P205B Reductant Tank Temperature Sensor Circuit Out of Range / Performance
- P205C Low rate of reducing agent tank temperature sensor circuit
- P205D Reductant Tank Temperature Sensor Circuit High Signal
- P205E Unstable / unstable reductant tank temperature sensor circuit
- P205F Reductant System Efficiency Bank 2
- P2060 Low rate of reducing agent injection air pump control circuit
- P2061 A high rate of reducing agent injection air pump control circuit
- P2062 Reductant / Regeneration Control Circuit / Open
- P2063 Low rate of the control circuit supply of the reducing agent / regeneration
- P2064 Reductant / Regeneration Control Circuit High Signal
- P2065 Fuel Level Sensor "B" Circuit
- P2066 Fuel Level Sensor "B" Circuit Performance
- P2067 Low fuel level sensor "B"
- P2068 Fuel Level Sensor "B" Circuit High
- P2069 Fuel Level Sensor "B" Circuit Intermittent
- P206A Reducing agent quality sensor circuit
- P206B Reductant Quality Sensor Circuit Range / Performance
- P206C Low rate of the reducing agent quality sensor circuit
- 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 valve (IMT) stuck open bank 1
- P2071 Intake manifold tuning valve (IMT) stuck closed bank 1
- P2072 Throttle actuator control system - ice blockage
- P2073 Manifold absolute pressure/mass air flow - idle throttle position correlation
- 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 Bank 1
- P2078 Intake Manifold Tuning (IMT) Valve Position Sensor / Switch Circuit Bank 1
- P2079 Intake Manifold Tuning (IMT) Valve Position Sensor / Switch Circuit Malfunction Bank 1
- P207A Intake Manifold Tuning (IMT) Valve Position Sensor / Switch Circuit Bank 2
- P207B Intake Manifold Regulation (IMT) Valve Position Sensor / Circuit Switch Range / Performance Bank 2
- P207C Intake Manifold Tuning (IMT) Valve Position Sensor / Switch Circuit Bank 2
- P207D Intake Manifold Tuning (IMT) Valve Position Sensor / Switch Circuit Bank 2
- P207E Intake Manifold Tuning (IMT) Valve Position Sensor / Switch Circuit Malfunction Bank 2
- Indicators of the quality of the reducing agent P207F
- P2080 Exhaust Gas Temperature Sensor Circuit Out of Range / Performance Bank 1 Sensor 1
- P2081 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 1
- P2082 Exhaust Gas Temperature Sensor Circuit Out of Range / Performance Bank 2 Sensor 1
- P2083 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 1
- P2084 Exhaust Gas Temperature Sensor Circuit Out of Range / Performance Bank 1 Sensor 2
- P2085 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 1 Sensor 2
- P2086 Exhaust Gas Temperature Sensor Circuit Out of Range / Performance Bank 2 Sensor 2
- P2087 Exhaust Gas Temperature Sensor Circuit Intermittent Bank 2 Sensor 2
- P2088 Camshaft Position Actuator Control Circuit Bank 1 Low
- P2089 Camshaft Position Actuator Control Circuit High Bank 1
- P208A Reductant pump control circuit / open
- P208B Reductant Pump Control Range / Performance
- P208C Low rate of reducing agent pump control circuit
- P208D Reductant Pump Control Circuit High
- P208E Reductant Injection Valve Stuck Closed, Bank 1, Bank 1
- P208F Reductant Injection Valve Stuck Closed, Bank 2, Bank 1
- P2090 B Camshaft Position Actuator Control Circuit Bank 1 Low
- P2091 B Camshaft Position Actuator Control Circuit High Bank 1
- P2092 Camshaft Position Actuator Control Circuit Bank 2 Low
- P2093 Camshaft Position Actuator Control Circuit High Bank 2
- P2094 B Camshaft Position Actuator Control Circuit Bank 2 Low
- P2095 B Camshaft Position Actuator Control Circuit High Bank 2
- P2096 Fuel Trim System After Catalyst Too Lean Bank 1
- P2097 Post Catalyst Fuel Trim System Too Rich Bank 1
- P2098 Fuel Trim System After Catalyst 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 Low rate of the reducing agent injection air pressure sensor circuit "B"
- P209D Reductant injection system air pressure sensor "B", high signal
- P209E Reductant Injection Air Pressure Sensor "A" / "B" Correlation
- P209F Reductant Tank Heater Control Circuit Performance
- P20A0 Reductant Purge Control Valve Circuit / Open
- P20A1 Reductant Purge Control Valve Operation
- P20A2 Low rate of the reducing agent purge valve circuit
- P20A3 Reductant Purge Control Valve Circuit High
- P20A4 Reductant purge control valve stuck open
- P20A5 Reductant purge control valve stuck closed
- P20A6 Reducing agent injection air pressure control valve circuit / open circuit
- P20A7 Reducing agent injection air pressure control valve operation
- P20A8 Low rate of the reducing agent injection air pressure control valve circuit
- P20A9 A high rate of the reducing agent injection air pressure control valve circuit
- P20AA Reductant Injection Air Pressure Regulating Valve Stuck Open
- P20AB Reductant Injection Air Pressure Regulator Valve Stuck Closed
- P20AC Reductant Dosing Unit Temperature Sensor Circuit
- P20AD Reductant Dosing Unit Temperature Sensor Circuit Range / Performance
- P20AE Low indicator circuit of the temperature sensor of the reducing agent dosing unit
- P20AF High signal level in the temperature sensor circuit of the reducing agent dosing unit
- Intermittent / unstable circuit of the temperature sensor of the reducing agent dosing unit P20B0
- P20B1 Circuit / open circuit of the reductant heater coolant control valve
- P20B2 Reductant Heater Coolant Control Valve Performance
- P20B3 Low rate of the reducing agent heater coolant control valve circuit
- P20B4 Reductant heater coolant control valve circuit - circuit high
- P20B5 Reductant dispenser heater control circuit / Open
- P20B6 Functioning of the heater control circuit of the reducing agent dosing unit
- P20B7 Low indicator of the control circuit of the reducing agent metering unit heater
- P20B8 High signal level of the control circuit of the heater of the reducing agent proportioner
- P20B9 Reductant heater control circuit "A" / open
- P20BA Reductant Heater "A" Control Circuit Characteristics
- P20BB Reductant heater "A", low signal level
- P20BC Reductant heater "A", high signal in the control circuit
- P20BD Reductant Heater "B" Control Circuit / Open
- P20BE Reductant Heater Control Circuit Performance
- P20BF Reductant heater "B", low signal level in the control circuit
- 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", high signal in the control circuit
- 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", high signal in the control circuit
- P20C9 Reductant Control Module Requested MIL Backlight
- P20CA Reductant Injection Air Pressure Leak
- P20CB Exhaust Gas Treatment System Fuel Injector Control Circuit / Open
- P20CC Exhaust gas aftertreatment system Fuel injector "A" Control characteristic
- P20CD Fuel injector "A" exhaust aftertreatment system - circuit low
- P20CE Exhaust Aftertreatment Fuel Injector Control Circuit Malfunction
- P20CF exhaust gas aftertreatment fuel injector "A" stuck open
- P20D0 The fuel injector of the exhaust gas aftertreatment system "A" is stuck in the closed position
- P20D1 Exhaust gas aftertreatment system fuel injector control circuit "B" / open
- P20D2 Exhaust gas aftertreatment system fuel injector control performance "B"
- P20D3 Low signal level in the fuel injector control circuit "B" of the aftertreatment system
- P20D4 Malfunction of the control circuit of the fuel injector "B" of the aftertreatment system
- P20D5 Fuel injector "B" of the exhaust gas aftertreatment system is stuck open
- P20D6 The fuel injector of the exhaust gas aftertreatment system "B" is stuck in the closed position
- P20D7 Exhaust Gas Treatment System Fuel Control Circuit / Open
- P20D8 Exhaust Gas Aftertreatment Fuel Management Efficiency
- P20D9 Low Exhaust Gas Aftertreatment Fuel Control Circuit
- P20DA Exhaust Fuel Aftertreatment Fuel Control Circuit
- P20DB Blocking the fuel supply of the exhaust gas aftertreatment system in the open state
- P20DC The exhaust gas aftertreatment fuel control unit is stuck in the closed position
- P20DD Exhaust Gas Purification Fuel Pressure Sensor Circuit
- P20DE Exhaust Gas Treatment System Fuel Pressure Sensor Circuit Out of Range / Performance
- P20DF Low signal level in the fuel pressure sensor circuit of the exhaust aftertreatment system
- P20E0 High signal in the fuel pressure sensor circuit of the exhaust aftertreatment system
- P20E1 Unstable / unstable exhaust gas aftertreatment fuel pressure sensor circuit
- 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 Air pressure too low for injection of reductant
- P20E7 Too high air pressure for injection of reducing agent
- P20E8 Reducing agent pressure too low
- P20E9 Reducing agent pressure too high
- P20EA reductant control module power relay de-energized - too early
- P20EB reductant control module power relay de-energized - too late
- NOx SCR Catalyst P20EC - Superheat Bank 1
- P20ED SCR NOx Pre-Catalyst - Overheat 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 - overheating, bank 2
- P20F1 SCR NOx precatalyst - overheating bank 2
- P20F2 SCR NOx Catalyst Efficiency Below Threshold Bank 2
- P20F3 SCR NOx Precatalyst Efficiency Below Threshold Bank 2
- Too low consumption of reducing agent P20F4
- Too high consumption of reducing agent P20F5
- P20F6 Reductant Injection Valve Stuck Open, Bank 1, Bank 1
- P20F7 Reductant Injection Valve Stuck Open, Bank 2, Bank 1
- P20F8 – P20FF ISO / SAE Reserved
Next: Trouble Codes P2100-P2199
Quick links to other trouble codes (starting with): P00xx: P01xx: P02xx: P03xx: P04xx: P05xx: P06xx: P07xx: P08xx: P09xx: P0Axx: P0Bxx: P0Cxx: P1 ***: P20xx: P21xx: P22xx: P23xx: P24xx: P25xx: P26xx: P27xx: P28 / P29 / P2A / P2B: P34xx
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