B202D Diagnostic Trouble Code

B202D 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 B202D diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Diminished fuel efficiency

Possible Causes :

The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Defective ECU strategies or components will prevent proper regeneration
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors.

Process Tips

Diagnostic trouble code B202D 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 B202D.

Fortunately, B202D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B202D Trouble Code For Specific Cars

B202D Chevrolet Corvette C6 Driver Window Down Current Sense Low Circuit Failure
B202D Ford Flex Mirror Driver Down Circuit Open
B202D Honda Quintet Rear Sounder Circuit Failure
B202D Chrysler Pacifica Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
B202D Ford Courier Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
B202D Jaguar Xj-7 Seat Driver Front Up/Down Motor Stalled
B202D Skoda 1201 Key Line Voltage