Can someone help with this Specific Code?
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Can someone help with this Specific Code?
I changed the o2 Sensor and still have the CEL even after clearing it with Vag-Com several Times, was changing it not the answer?
16525 - Oxygen (Lambda) Sensor B1 S2: Heating Circuit Malfunction
P0141 - 92-00 - Unknown Error Elaboration
Readiness: N/A
1997 Audi A4 2.8Q
16525 - Oxygen (Lambda) Sensor B1 S2: Heating Circuit Malfunction
P0141 - 92-00 - Unknown Error Elaboration
Readiness: N/A
1997 Audi A4 2.8Q
Thread Starter
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Joined: May 2004
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Re: Check wiring to O2 sensor heater
Am I correct in assuming that the o2 sensor Heater is around or in the wiring harness where the O2 sensor plugs into the electical plugs in the Engine? Or is it near the plug (behind the Cat)? Please excuse my Ignorance, but That still makes little sense to me. If I check the wiring what am I looking for?? And how can it be fixed since the Sensor was just changed in B1 S2 (Passenger Side After Cat)?
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Re: Please read my post below.
Ok... But I replaced the Entire Plug and Wiring with a Bosch OEM Plug. So why would Get the same error code if the volts are not correct? More to the point, lets say I do check the volts, what am I looking for, and how do I fix it since I just replaced this o2 Sensor and all the wiring leading up to where it plugs in to the wiring harness up near the engine.
Thanks for your help
Thanks for your help
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Unplug the sensor you just replaced, but leave it threaded into the exhaust.
Use a volt meter on the car side of the connector, turn on your ignition and check for 12 v across the heater pins on the plug. I don't have an A4 wiring diagram, but on my car there are four pins, 2 for the heater (gives you 12v) and two for the o2 sensor.
The first thing you need to do is make sure you have the heater voltage at the connector. My guess is you don't and the problem is not the o2 sensor.
The first thing you need to do is make sure you have the heater voltage at the connector. My guess is you don't and the problem is not the o2 sensor.
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