B1078 Diagnostic Trouble Code

B1078 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 B1078 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
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.
Dirty air cleaner element Damaged DPF

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. 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. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code B1078 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 B1078.

Fortunately, B1078 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1078 Trouble Code For Specific Cars

B1078 Ferrari Pinin Key Off Voltage High
B1078 Chevrolet Aveo 2 Driver Memory Power Switch Indicator Circuit Short to Battery
B1078 Fiat 3 Lamp ABS Warning Output Circuit Short To Ground
B1078 Ford Country Main Catalyst Efficiency Below Threshold (Bank 2)
B1078 Ginetta G5 Output Speed Sensor Intermittent
B1078 Volkswagen Export Ride Control LF Shock Actuator Circuit Open
B1078 Panhard L5 Driver Power Window One Touch Window Relay Circuit Short To Battery