Technical Definition:

Exhaust Pressure Control Valve Low

Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Pressure Control Valve Low

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Exhaust Back Pressure Valve
– Exhaust Back Pressure Valve harness is open or shorted
– Exhaust Back Pressure Valve circuit poor electrical connection

Specific Makes:

Technical Definition:

Exhaust Pressure (Sensor A) Circuit Low

Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Pressure Sensor Low

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Exhaust Back Pressure Sensor
– Exhaust Back Pressure Sensor harness is open or shorted
– Exhaust Back Pressure Sensor circuit poor electrical connection

Specific Makes:

Technical Definition:

Exhaust Pressure (Sensor A) Circuit High

Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Pressure Sensor High

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Exhaust Back Pressure Sensor
– Exhaust Back Pressure Sensor harness is open or shorted
– Exhaust Back Pressure Sensor circuit poor electrical connection

Specific Makes:

Technical Definition:

Exhaust Pressure (Sensor A) Circuit Malfunction

Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Pressure Sensor Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Exhaust Back Pressure Sensor
– Exhaust Back Pressure Sensor harness is open or shorted
– Exhaust Back Pressure Sensor circuit poor electrical connection

Specific Makes:

Technical Definition:

Exhaust Pressure (Sensor A) Circuit Range / Performance

Technical Description:

Possible Causes:

Possible Symptoms:

Exhaust Pressure Sensor Range/Performance

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Exhaust Back Pressure Sensor
– Exhaust Back Pressure Sensor harness is open or shorted
– Exhaust Back Pressure Sensor circuit poor electrical connection

Specific Makes:

Technical Definition:

Evaporative Emission (EVAP) Purge Flow Sensor Circuit High

Technical Description:

Possible Causes:

Possible Symptoms:

Purge Flow Sensor Circuit High Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

Technical Definition:

Evaporative Emission (EVAP) Purge Flow Sensor Circuit Intermittent

Technical Description:

Possible Causes:

Possible Symptoms:

Purge Flow Sensor Circuit Intermittent

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

Technical Definition:

Evaporative Emission (EVAP) Purge Flow Sensor Circuit Range / Performance

Technical Description:

Possible Causes:

Possible Symptoms:

Purge Flow Sensor Circuit Range/Performance

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

Technical Definition:

Evaporative Emission (EVAP) Purge Flow Sensor Circuit Low

Technical Description:

Possible Causes:

Possible Symptoms:

Purge Flow Sensor Circuit Low Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

Technical Definition:

Fuel Level (Sensor A) Circuit Range / Performance

Technical Description:

Possible Causes:

Possible Symptoms:

Fuel Level Sensor Circuit Range/Performance

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty fuel level sensor
– Fuel level sensor harness is open or shorted
– Fuel level sensor circuit poor electrical connection

Specific Makes:

– Incorrect fuel level reading

Technical Definition:

Fuel Level (Sensor A) Circuit Low

Technical Description:

Possible Causes:

Possible Symptoms:

Fuel Level Sensor Circuit Low Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty fuel level sensor
– Fuel level sensor harness is open or shorted
– Fuel level sensor circuit poor electrical connection

Specific Makes:

– Incorrect fuel level reading

Technical Definition:

Fuel Level (Sensor A) Circuit High

Technical Description:

Possible Causes:

• The signal circuit to the fuel sender is open or shorted to B+ (Battery voltage)
• The ground circuit is open, or ground path may have high resistance due to rust or missing ground strap on fuel tank
• Damage to the fuel tank could cause problem in fuel level circuit
• There’s an open in the fuel lever sensor’s resistor to ground
• Possibly faulty instrument cluster
• Less likely is the possibility that the PCM, BCM, or Fuel pump computer module has failed

Possible Symptoms:

• Mil (Malfunction indicator lamp) illumination
• Fuel level gauge may fluctuate abnormally or read empty or full
• Fuel light may illuminate and sound alarm

Fuel Level Sensor Circuit High Input

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty fuel level sensor
– Fuel level sensor harness is open or shorted
– Fuel level sensor circuit poor electrical connection

Specific Makes:

– Incorrect fuel level reading

Technical Definition:

Fuel Level (Sensor A) Circuit Intermittent

Technical Description:

Possible Causes:

Possible Symptoms:

Fuel Level Sensor Circuit Intermittent

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty fuel level sensor
– Fuel level sensor harness is open or shorted
– Fuel level sensor circuit poor electrical connection

Specific Makes:

– Incorrect fuel level reading

Technical Definition:

Evaporative Emission (EVAP) Purge Flow Sensor Circuit

Technical Description:

Possible Causes:

Possible Symptoms:

Purge Flow Sensor Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes: