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P2278 Engine Trouble Code

P2278 Engine

When you check engine light came on code P2278 the reason should be . However your vehicle's manufacturer may have a different definition for the P2278 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P2278 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

P2278 Code Meaning :

P 2 2 7 8
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering (Injector Circuit Malfunctions Only) Ambient Air Temperature Sensor Circuit Low Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector) Timing Reference High Resolution Signal A Too Many Pulses

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above.

P2278 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P2278 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Reason For P2278 Code

The reason of P2278 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

P2278 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.