P290D Diagnostic Trouble Code

P290D 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 P290D 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 :

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.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code P290D 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 P290D.

Fortunately, P290D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P290D Trouble Code For Specific Cars

P290D Locomobile 30 Timing Reference High Resolution Signal A Intermittent/Erratic Pulses
P290D Mitsubishi Mum Aux A/C Mode Position Reference Circuit Short to Ground
P290D Aston Martin V8 Air Suspension Warning Lamp Circuit Short To Battery
P290D Peugeot Nautilus Engine Coolant Sensor intermittent/ECT Sensor Intermittent
P290D Jensen Sp Seat Driver Recline Rearward Switch Circuit Short To Battery
P290D Volkswagen Concept Reverse Mirror Output Circuit Failure
P290D Ford Ranchero Mirror Passenger Left Circuit Failure