P05ED Diagnostic Trouble Code

P05ED 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 P05ED diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

Faulty IMRC actuator/sensor
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. 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. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P05ED 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 P05ED.

Fortunately, P05ED is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P05ED Trouble Code For Specific Cars

P05ED Rover 800 Ignition Coil D Primary Circuit Malfunction
P05ED Vignale 124 Purge Valve Stuck Open
P05ED Armstrong Siddeley Whitley Air Suspension Rear Height Sensor Low Signal Circuit Open
P05ED Alfa Romeo Spider Air Bag Crash Sensor #2 Feed/Return Circuit Open
P05ED Tvr Trident Power Steering Pressure sensor Circuit Intermittent
P05ED Tatra T613 Mirror Switch Assembly Circuit Short to Ground
P05ED Allard M Air Bag Driver Circuit Short To Battery