P307E Diagnostic Trouble Code

P307E is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a P307E diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code P307E is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P307E.

Fortunately, P307E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P307E Trouble Code For Specific Cars

P307E Noble M10 Cylinder 1 Misfire Detected
P307E Toyota Premio Park / Neutral Switch Input Circuit High
P307E Fiat 2 Lack Of HO2S22 Switch - Sensor Indicates Lean
P307E Hyundai Eon
P307E Oldsmobile Recon Damper LF Circuit Failure
P307E Diana Straight Hydraulic Pump Relay Circuit High
P307E Nissan Tino Cylinder #3 High To Low Side Open