B20D7 Diagnostic Trouble Code

B20D7 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 B20D7 diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
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.
Faulty IMRC actuator/sensor

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. 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. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code B20D7 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 B20D7.

Fortunately, B20D7 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B20D7 Trouble Code For Specific Cars

B20D7 Holden Ek PNP Switch Out Of Self Test Range
B20D7 Daimler 2.5-litre Gyroscope Error
B20D7 Lancia 037 Speed Wheel Mismatch
B20D7 Rolls-royce Silver Hydraulic Pump Relay Circuit Range/Performance
B20D7 Mercedes-benz Cl Class Air Pressure Low Circuit Short to Gnd
B20D7 Mini One ASM Mode Circuit High
B20D7 Lotus Etna Traction Control Motor Circuit Failure