NENO

Fitted a MRT fuel cut defender the other week and I keep getting the check engine light. The light stays on for about five minutes after start up then goes out.

I got a select monitor on it yesterday and it reports a code 45 - pressure sensor fault. Frankly I'm not sure what this would be as I have a Dawes fitted so the boost solenoid is disconnected. Any ideas??

NENO

john banks

Wiring or FCD are faulty.

Measure voltage at the MAP sensor input to the ECU at idle and 0 and 10 PSI with a DVM and post findings including model year and we'll try to help more.

NENO

Thanks John, I'll go over the wiring tomorrow morning I was fairly confident in the wiring I wasn't sure the FCD was related to the code.

I managed to measure the voltage, 1.42 (IIRC), at cold idle but I'll have help tomorrow to check the others

Cheers
MY97 UK

L_dor1

I had the same problem make shure that you connect to a 12V supply that is still present when the engine is cranking over.

NENO

Thanks for the info. I've gone back over the wiring, replacing with solder and started the adjustment over - all seems good so perhaps it was the wiring

Thanks for your help