Engine wiring diagrams?

Hello,

This guide can help us fix it which should make the codes go away

https://www.2carpros.com/articles/stall-at-idle

In the diagrams down below I have included the definition and possible causes for Direct Trouble Codes[DTC][s] P0102, P0141, P0171, P0174, and P1309. DTCs P0302, P0303, P0304, and P0305 are DTC's for misfires with the last number representing the cylinder number. So DTC P0302 is a misfire in cylinder 2, P0303 is a misfire in cylinder 3, and so on. I have also included guides for finding intermittent conditions, finding opens, finding short to grounds, finding unwanted resistance with voltage drop, and the engine management wiring diagrams for your vehicle. You will need to use a Digital Multi-meter [DMM] to go through these guides, so here is a link below explaining how to use one, if needed:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please go through these guides and get back to us with what you find out.

Thanks,
Alex
2CarPros

Good afternoon,

Alex has given great information for you but I want to try and give it in easier terms.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

The misfire codes and the 171,174 could all be related to low fuel pressure from a bad fuel pump. I would start with checking the actual fuel pressure.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

The 102 is mass air flow sensor. Make sure the hose from the sensor to the throttle body is hooked up, tight and has no leaks.

The 141 is for the heater circuit for the O2 sensor. The most common cause is the sensor itself.

Roy