P0914 Diagnostic Trouble Code

P0914 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 P0914 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
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 :

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. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code P0914 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 P0914.

Fortunately, P0914 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0914 Trouble Code For Specific Cars

P0914 Ford S-max 2 Mirror Passenger Right/Left Motor Stalled
P0914 Ford Svt Mirror Passenger Up/Down Motor Stalled
P0914 Oltcit Special Damper LR Circuit Short To Battery
P0914 Holden Belmont Pedal Position Forward Switch Circuit Short to Battery
P0914 Peugeot 202 ECM Control Relay O/P Circuit Malfunction
P0914 Geely Haoqing O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
P0914 Ford B-max Liftgate Disarm Switch Circuit Short to Ground