C2934 Diagnostic Trouble Code

C2934 is a kind of OBD-II Diagnostic C-Chassis 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 C2934 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Look at the plug wires to make sure they are not burnt or laying on the exhaust. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code C2934 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 C2934.

Fortunately, C2934 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2934 Trouble Code For Specific Cars

C2934 Audi A7 ANTI THEFT HORN OUTPUT CIRCUIT Short to Batt
C2934 Martin Aero Transmission 4-Wheel Drive Mode Select Open Circuit
C2934 Volvo 262
C2934 Renault Megane 4 Heated Backlite Relay Circuit Failure
C2934 Plymouth Neon Evaporative Emission Control System Vent Control Circuit Open
C2934 Honda 145 Pressure Control Solenoid A Control Circuit Low
C2934 Pegaso Z102 Drivers Seat Belt Buckle Switch Resistance out of Range