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B1284 Engine Trouble Code

Meaning of B1284 engine trouble code is : B1284 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.

B1284 Possible Solution:

B1284 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.

B1284 Code Meaning :

B 1 2 8 4
OBD-II Diagnostic Body (B) Trouble Code For Engine Fuel And Air Metering Manifold Absolute Pressure/Barometric Pressure Circuit High Input Ignition/Distributor Engine Speed Input Circuit Malfunction Timing Reference High Resolution Signal A Too Many Pulses

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

B1284 OBD-II Diagnostic Body (B) Trouble Code Description

B1284 engine trouble code is about Timing Reference High Resolution Signal A Too Many Pulses.

Reason For B1284 Code

The reason of B1284 OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

B1284 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.