B2677 Diagnostic Trouble Code

B2677 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 B2677 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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 B2677 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 B2677.

Fortunately, B2677 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2677 Trouble Code For Specific Cars

B2677 Auburn 852 Alarm Panic Input Circuit Open
B2677 Hyundai Xg
B2677 Tucker 48 Pedal Forward / Rearward Potentiometer Feedback Circuit Failure
B2677 Mercedes Cl 55 ABS Inlet Valve Coil RF Circuit Open
B2677 Mercedes E 320 ABS Valve Power Relay Circuit Failure
B2677 Dort Roadster Ignition Tamper Circuit Short To Battery
B2677 Opel Astra Data Mismatch #2 (receive data does not match what was expected)