C104B Diagnostic Trouble Code

C104B 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 C104B diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
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
Dirty air cleaner element Damaged DPF

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 C104B 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 C104B.

Fortunately, C104B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C104B Trouble Code For Specific Cars

C104B Audi 90 Ambient Air Temperature Sensor Circuit
C104B Citroen Karin
C104B Hotchkiss Anjou Ride Control LF Shock Actuator Circuit Short To Ground
C104B Mazda 616 Transmission Transfer Case Contact Plate 'D' Open Circuit
C104B Leyland P76 Throttle Control Unit Malfunction
C104B Renault Primaquatre Heated Catalyst Temperature Below Threshold (Bank 2)
C104B Chevrolet Optra EGRA Circuit Malfunction