P051E Diagnostic Trouble Code

P051E 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 P051E diagnostic trouble code may include:

Faulty or damaged wiring
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Poor fuel economy
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code P051E 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 P051E.

Fortunately, P051E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P051E Trouble Code For Specific Cars

P051E Mazda 6 Transmission Transfer Case Contact Plate 'C' Short Circuit To Ground
P051E Jeep Dakar Seat Driver Rear Up Switch Circuit Open
P051E Marendaz 13 Transmission 4-Wheel Drive Low Indicator Circuit Failure
P051E Lincoln Sentinel Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
P051E Fiat 35 Hp Lamp Air Bag Warning Indicator Circuit Failure
P051E Clan Crusader Fuel Rail/System Pressure - Too High
P051E Lada Vaz 2107 Shift Solenoid C Intermittent