P274F Diagnostic Trouble Code

P274F 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 P274F diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Reduction in engine performance, especially at low RPM levels

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. 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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code P274F 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 P274F.

Fortunately, P274F is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P274F Trouble Code For Specific Cars

P274F Rickenbacker 8 HO2S Transition Time Ratio Sensor 1
P274F Healey Sportsmobile Passengers Seat Belt Buckle Switch Circuit Open
P274F Ford Explorer Iii Memory 2 Switch Circuit Short To Battery
P274F Saab 9.5 Ii Ignition Run/Acc Circuit Short To Ground
P274F Mercedes Cls 500 ABS Outlet Valve Coil RR Circuit Failure
P274F Ferrari 156 Injector Control Circuit
P274F Austin-healey 3000 Aux A/C Mode Position Reference Circuit Short to Battery