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C1581 Engine Trouble Code

Meaning of C1581 engine trouble code is : C1581 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.

C1581 Possible Solution:

C1581 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.

C1581 Code Meaning :

C 1 5 8 1
OBD-II Diagnostic Chassis (C) Trouble Code For Engine Fuel And Air Metering Fuel Composition Sensor Circuit Malfunction Ignition/Distributor Engine Speed Input Circuit Malfunction Crankshaft Position Sensor A Circuit Low Input

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.

C1581 OBD-II Diagnostic Chassis (C) Trouble Code Description

C1581 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Reason For C1581 Code

The reason of C1581 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

C1581 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.