P2900 Diagnostic Trouble Code

P2900 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 P2900 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.
Diminished fuel efficiency

Possible Causes :

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.
Defective ECU strategies or components will prevent proper regeneration
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. 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 P2900 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 P2900.

Fortunately, P2900 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2900 Trouble Code For Specific Cars

P2900 Scion Tc Injection Pump Fuel Metering Control "B" Range/Performance (Cam/Rotor/Injector)
P2900 Mitsubishi Sss Auxillary Speed Sensor Fault
P2900 Bianchi S Brake Pedal Input Circuit Ground Short
P2900 Cisitalia 1100 Exhaust Valve Control Solenoid Circuit (Bank 1)
P2900 Abarth 124 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
P2900 Renault Megane 4 Heated Backlite Relay Circuit Failure
P2900 Lamborghini Reventon SPCUT Solenoid Circuit Malfunction