P187F Diagnostic Trouble Code

P187F 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 P187F 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. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem.

Process Tips

Diagnostic trouble code P187F 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 P187F.

Fortunately, P187F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P187F Trouble Code For Specific Cars

P187F Chevrolet Apv Driver Door Ajar Circuit Open
P187F Fiat Regata Lamp Warning Relay Circuit Short To Ground
P187F Chevrolet Corvette C5 Driver Sliding Door Ajar Circuit Short to GND
P187F Hyundai Tuscon SCP (J1850) Invalid or Missing Data for Engine Oil
P187F Saturn Sedan Incorrect Gear Ratio
P187F Amc Hornet Air Suspension Front Inflator Solenoid Output Circuit Short To Battery
P187F Citroen C1 Front Sounder Circuit Failure