B2770 Diagnostic Trouble Code

B2770 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 B2770 diagnostic trouble code may include:

Possible spark knock (detonation / pre-ignition)
Poor fuel economy
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code B2770 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 B2770.

Fortunately, B2770 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2770 Trouble Code For Specific Cars

B2770 Ferrari F430 Internal Control Module RAM Error
B2770 Ford Everest Memory #1 output Short to VBatt
B2770 Amilcar C6 Air Suspension LF Corner Down Timeout
B2770 Nissan Prairie COURTESY LAMP OUTPUT Ckt Short to Battery
B2770 Pontiac Sv Four Wheel Drive (4WD) Switch Circuit High
B2770 Mitsubishi Mum Aux A/C Mode Position Reference Circuit Short to Ground
B2770 Mercedes Glc Accelerometer Rear Circuit Short To Ground