P314E Diagnostic Trouble Code

P314E 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 P314E diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
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

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. 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 P314E 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 P314E.

Fortunately, P314E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P314E Trouble Code For Specific Cars

P314E Chery A1 Door Unlock Disarm Switch Circuit Short To Battery
P314E Citroen Jumper Ii Fuel Pulse In Range But Higher Than Expected
P314E Toyota Mr2 Spyder Output Speed Sensor Intermittent
P314E Oldsmobile Profile Damper High Side Rear Circuit Short To Battery
P314E Edsel Villager Injection Control Pressure Out Of Range Low
P314E Moretti Ss Booster Mechanical Failure
P314E Seat Ateca Injector Circuit Open / Shorted - Cylinder #2