B1008 Diagnostic Trouble Code

B1008 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 B1008 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
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.
Faulty IMRC actuator relay (if equipped)

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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. 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 B1008 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 B1008.

Fortunately, B1008 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1008 Trouble Code For Specific Cars

B1008 Audi A2 Ambient Air Temperature Sensor Circuit Low
B1008 Citroen Six Fuel Pump Secondary Circuit Low, High Speed
B1008 Italdesign Orbit SCP (J1850) Lack of Acknowledgment for Telltales
B1008 Lotus Evora Traction Control Motor Circuit Short to Battery
B1008 Rolls-royce Corniche Hydraulic Pump Relay Circuit / Open
B1008 Bentley Azure Battery Power Supply ECU Circuit Failure
B1008 Plymouth Satellite EVR Control Circuit Malfunction