CHECK ENGINE LIGHT AFTER BRAKE JOB.

2007 Jeep Grand Cherokee

Tiny

mattscarbro

June, 11, 2012 AT 1:46 AM

I just changed the front rotors & pads as well as the rear pads on my wife's jeep. During the first drive, a check engine light came on. It was my first time working on it but it was pretty straight forward unless I missed something. Any ideas as to what could cause this?

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7 Answers

Tiny

saturntech9

June, 11, 2012 AT 1:52 AM

The first thing you need to do is take it to a auto parts store like auto zone and have them scan the computer for codes. Post the exact code numbers not code descriptions. Thats are starting point.

Tiny

mattscarbro

June, 11, 2012 AT 2:22 AM

Po730 is the code its throwing. Autozone didn't even have a description for it.

Tiny

saturntech9

June, 11, 2012 AT 2:42 AM

That code is for incorrect gear ratio. Do you have abs?

Tiny

mattscarbro

June, 11, 2012 AT 3:00 AM

Yes it does.

Tiny

saturntech9

June, 11, 2012 AT 3:10 AM

I would check all your abs wheel speed harnesses for being damaged from the brake job that makes the most sense. Let me know what you find.

Tiny

mattscarbro

June, 12, 2012 AT 1:15 AM

Well autozone cleared the CEL and my wife drove the car all day today and it hasn't come back on. It could be a freak incident but if it comes on again I'll let you know.

Tiny

saturntech9

June, 12, 2012 AT 1:26 AM

Anything is possible keep me posted on the light and code status.

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