B0689 Diagnostic Trouble Code

B0689 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 B0689 diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. 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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code B0689 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 B0689.

Fortunately, B0689 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0689 Trouble Code For Specific Cars

B0689 Albion 15 ABS Outlet Valve Coil Rear Circuit Open
B0689 Bmw Serie 6 Clutch Solenoid Circuit Malfunction
B0689 Locomobile 90 Timing Reference High Resolution Signal A Too Few Pulses
B0689 Mercedes A 200 ABS Functions Temporarily Disabled
B0689 Skoda 1000 Invalid Test,throttle not depressed
B0689 Holden Torana Power Window Master Circuit Short To Ground
B0689 Volkswagen W12 SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System