B1272 Diagnostic Trouble Code

B1272 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 B1272 diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
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.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs.

Process Tips

Diagnostic trouble code B1272 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 B1272.

Fortunately, B1272 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1272 Trouble Code For Specific Cars

B1272 Mercury El Gato Air Suspension LR Air Spring/Shock Solenoid Output Circuit Short To Ground
B1272 Peugeot Escapade Emergency Power Off System Faulted
B1272 Kia Rio Iii Secondary Air Injection System Relay B Circuit Malfunction
B1272 Nissan Z Concept Cylinder 1 Contribution/Balance Fault
B1272 Brutsch Mopetta Cruise Control Resume Signal Malfunction
B1272 Bentley 8-litre Battery Power Relay Circuit Short To Battery
B1272 Peugeot Expert Iii Engine Coolant Level Lamp Circuit Short to Ground