P127F Diagnostic Trouble Code

P127F is a kind of OBD-II Diagnostic P-Powertrain 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 P127F diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code P127F 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 P127F.

Fortunately, P127F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P127F Trouble Code For Specific Cars

P127F Rover 100 Idle Control System Malfunction
P127F Chrysler Dodge ETC In Power Limiting Mode
P127F Matra-talbot Murena Transmission Range Display Circuit
P127F Italdesign Structura SCP (J1850) Single Ended (-) Circuit Failure
P127F Dodge Daytona Ignition Coil K Primary/Secondary Circuit Malfunction
P127F Rolls-royce Silver Spur Idle Air Control Overspeed Error
P127F Audi Concept Anti-Theft Number of Programmed Keys Is Below Minimum