B1208 Diagnostic Trouble Code

B1208 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 B1208 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. 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. 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 B1208 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 B1208.

Fortunately, B1208 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1208 Trouble Code For Specific Cars

B1208 Rover 60 Ignition Coil C Primary Circuit Malfunction
B1208 Chevrolet Kodiak ECM/TCM Serial Communication Error
B1208 Imperial Custom
B1208 Land Rover Velar Synchronization Fault
B1208 Mercedes A 200 ABS Functions Temporarily Disabled
B1208 Mercedes Cla ABS Inlet Valve Coil RR Circuit Open
B1208 Audi Rs3 ASM Mode Circuit [Perf / Winter / Sport / etc]