P242F Diagnostic Trouble Code

P242F 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 P242F diagnostic trouble code may include:

Faulty O2 Sensor
Lack of power
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

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. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code P242F 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 P242F.

Fortunately, P242F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P242F Trouble Code For Specific Cars

P242F Cadillac 50 Damper LR Circuit Short to Ground
P242F Mg Rv13 Air Temperature Internal Sensor Circuit Open
P242F Checker Town Door Unlock Disarm Output Circuit Failure
P242F Mitsubishi Space Star Ii Aux Heater Overheat Fault
P242F Mercury Villager Air Suspension RF Air Spring Solenoid Output Circuit Failure
P242F Vauxhall Viceroy Pressure Control Solenoid Intermittent
P242F Bmw Convertible Climate Control Temperature Differential Circuit Open