P1CF4 Diagnostic Trouble Code

P1CF4 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 P1CF4 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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code P1CF4 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 P1CF4.

Fortunately, P1CF4 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1CF4 Trouble Code For Specific Cars

P1CF4 Clan Crusader Fuel Rail/System Pressure - Too High
P1CF4 Lincoln Cosmopolitan Throttle Position Sensor B Out Of Self Test Range
P1CF4 Rolls-royce Silver Wraith Idle Air Control System At Adaptive Clip
P1CF4 Suminoe Flying MAF Sensor In Range But Lower Than Expected
P1CF4 Zis 112 Seat Belt Switch Circuit Open
P1CF4 Subaru 1400 Lateral Accelerometer Sensor Circuit Open
P1CF4 Infiniti Q45 SCP (J1850) Invalid or Missing Data for External Lamps