B297E Diagnostic Trouble Code

B297E is a kind of OBD-II Diagnostic B-Body 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 B297E 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 :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. 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 B297E 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 B297E.

Fortunately, B297E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B297E Trouble Code For Specific Cars

B297E Mercedes Slk 200 Air Bag Diagnostic Monitor Ground Circuit Failure
B297E Bmw 2000 Camshaft Position Sensor Circuit Intermittent
B297E Peugeot 108 Dynamic Stability Control Right Rear Valve Malfunction
B297E Holden Efijy Performance / Normal / Winter Mode Input Malfunction
B297E Tvr Tasmin Power Steering Output Circuit Malfunction
B297E Mazda 2000 Transmission Transfer Case Contact Plate 'B' Short Circuit To Battery
B297E Vauxhall Antara Power Window RR Motor Circuit Short To Battery