B2934 Diagnostic Trouble Code

B2934 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 B2934 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications. 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code B2934 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 B2934.

Fortunately, B2934 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2934 Trouble Code For Specific Cars

B2934 Trabant 601 Passenger Sid, Side mount Airbag Circuit Short to Ground
B2934 Lotus Exige S3 Traction Control Motor Potentiometer Circuit Failure
B2934 Rover P6 Ignition Cylinder Sensor Circuit Failure
B2934 Mercury Montego Air Suspension Rear Height Sensor Low Signal Circuit Open
B2934 Mercury Villager Air Suspension RF Air Spring Solenoid Output Circuit Failure
B2934 Panhard Cd Driver Power Window Down Circuit Short To Ground
B2934 Lotus 79 Torque Converter/Brake Switch B Circuit Low