Check engine light back on again

KENT4U

MEMBER
2001 AUDI TT
1.8L
4 CYL
TURBO
AWD
MANUAL
115,000 MILES

Hi I have a 2001 Audi TT Quattro turbo. Check engine like came on. Read p1114/p1113 high resistance on both o2 sensors. I replaced both sensors cleared the code, 50 miles down the road comes back on with same codes. Ideas?

Wednesday, October 14th, 2015 AT 12:53 PM

5 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

HO2 Sensor Bank 1 Sensor 1 harness is open or shorted
- HO2 Sensor Bank 1 Sensor 1 circuit poor electrical connection

This will be the same for both codes so check plugs and do a pin out back to the ECU and check for high resistance.

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Friday, October 16th, 2015 AT 5:01 AM

KENT4U

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3 POSTS

Are you saying I should check the spark plugs? And what is a pin out?

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Friday, October 16th, 2015 AT 8:43 AM

MHPAUTOS

MECHANIC
31,937 POSTS

Check that the connection plugs for the sensors are not damaged, corroded or loose, a pin out is checking the wires from the O2 sensor back to the ECU for high resistance, you need to be able to use a multi meter for this.

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Friday, October 16th, 2015 AT 3:15 PM

KENT4U

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3 POSTS

You know I checked the resistance on both of the old sensors and they showed 9.3 which I believe is well within limits, so that kind of through me off thinking that they weren't really bad after all. Ill recheck the connections but they seemed clean and tight when I put them together. Is this the only possibility being the sensors or the wire to the Ecu?

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Friday, October 16th, 2015 AT 4:44 PM

MHPAUTOS