B202F Diagnostic Trouble Code

B202F 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 B202F diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
Reduction in engine performance, especially at low RPM levels

Possible Causes :

A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Some aftermarket accessories and performance modifications
Faulty IMRC actuator/sensor

Repair Processes :

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. Now, clear the codes and test-drive the vehicle to see if the code is reset. 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 B202F 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 B202F.

Fortunately, B202F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B202F Trouble Code For Specific Cars

B202F Dodge Stratus Ignition Start Circuit Short To Ground
B202F Nissan Stagea Cruise Control/Brake Switch A Circuit High
B202F Jaguar Xka Seat Driver Rear Down Circuit Failure
B202F Vauxhall Firenza Pressure Control Solenoid A Control Circuit / Open
B202F Allard K1 Air Bag Driver Circuit Failure
B202F Ford Explorer Memory 2 Switch Circuit Failure
B202F Puma Gt Fuel Temperature Sensor #1 Circuit Short to Battery