Category: OBDii Powertrain Codes

P2037 Reductant Injection Air Pressure Sensor Circuit OBD Code: System: Subsystem:  P2037 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Reductant Injection Air Pressure Sensor Circuit Location: Analysis: Possible Causes:    Circuit Issue   Tech description:

P2030 Fuel Fired Heater Performance OBD Code: System: Subsystem:  P2030 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Fuel Fired Heater Performance Location: Analysis: Possible Causes:       Tech description:

P2031 Exhaust Gas Temperature Sensor Circuit (Bank 1 – Sensor 2) OBD Code: System: Subsystem:  P2031 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Exhaust Gas Temperature Sensor Circuit (Bank 1 – Sensor 2) Location: Analysis: Possible Causes:  Bank 1 – Sensor 2  Circuit Issue   Tech description:

P2027 Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit High Voltage OBD Code: System: Subsystem:  P2027 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit High Voltage Location: Analysis: Possible Causes:    End of Range – Circuit Higher Than Expected   Tech description:

P2028 Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit Intermittent OBD Code: System: Subsystem:  P2028 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit Intermittent Location: Analysis: Possible Causes:    Circuit Sporatic / Not Continuous   Tech description:

P2029 Fuel Fired Heater Disabled OBD Code: System: Subsystem:  P2029 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Fuel Fired Heater Disabled Location: Analysis: Possible Causes:       Tech description:

P2021 Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 2a) OBD Code: System: Subsystem:  P2021 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 2a) Location: Analysis: Possible Causes:  Bank 2a  End of Range – Circuit Lower Than Expected  …

P2022 Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2a) OBD Code: System: Subsystem:  P2022 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2a) Location: Analysis: Possible Causes:  Bank 2a  End of Range – Circuit Higher Than Expected  …

P2023 Intake Manifold Runner Position Sensor / Switch Circuit Intermittent (Bank 2a) OBD Code: System: Subsystem:  P2023 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Intake Manifold Runner Position Sensor / Switch Circuit Intermittent (Bank 2a) Location: Analysis: Possible Causes:  Bank 2a  Circuit Sporatic / Not Continuous   Tech description:

P2024 Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit OBD Code: System: Subsystem:  P2024 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit Location: Analysis: Possible Causes:    Circuit Issue   Tech description:

P2025 Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Performance OBD Code: System: Subsystem:  P2025 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Performance Location: Analysis: Possible Causes:       Tech description:

P2026 Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit Low Voltage OBD Code: System: Subsystem:  P2026 – (ASE)  Powertrain  Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Evaporative Emissions (EVAP) Fuel Vapor Temperature Sensor Circuit Low Voltage Location: Analysis: Possible Causes:    End of Range – Voltage Signal Lower Than Expected   Tech description:

P2016 Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 1 Possible causes – Manifold flow valve harness is open or shorted– Manifold flow valve circuit poor electrical connection– Faulty Manifold flow valve– Intake manifold– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

P2017 Intake Manifold Runner Position Sensor/Switch Circuit High Bank 1 Possible causes – Manifold flow valve harness is open or shorted– Manifold flow valve circuit poor electrical connection– Faulty Manifold flow valve– Intake manifold– Faulty Powertrain Control Module (PCM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light)