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B3278 Engine Trouble Code

Meaning of B3278 engine trouble code is : Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

B3278 Possible Solution:

B3278 Engine

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

B3278 Code Meaning :

B 3 2 7 8
OBD-II Diagnostic Body (B) Trouble Code For Engine Ignition System Or Misfire Manifold Absolute Pressure/Barometric Pressure Circuit High Input Cylinder 10 Contribution/balance Fault Clutch Position Sensor Circuit Malfunction

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

B3278 OBD-II Diagnostic Body (B) Trouble Code Description

B3278 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Reason For B3278 Code

The reason of B3278 OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

B3278 DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.