CEL - again after fitting a new primary O2 sensor....
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Joined: Aug 2002
Posts: 4,918
Likes: 7
From: Warwickshire
CEL - again after fitting a new primary O2 sensor....
Looks like I got a faulty sensor unless there is anything alse which can cause the 17521 code?
I am still on the lookout for the EGT sensor but this does not seem to trigger the CEL?
I guess I am right in taking B1 as 'my' drivers side (RHD) or US Passenger side?
Wednesday,01,April,2009,23:28:14:29052
VCDS Version: Release 805.3
Edd's
Address 01: Engine
Control Module Part Number: 4B0 907 551 R
Component and/or Version: 2.7l V6/5VT G 0001
Software Coding: 10712
Work Shop Code: WSC 02325
Additional Info: WAUZZZ4BZ1N048536 AUZ7Z0Y1551952
2 Faults Found:
17521 - Oxygen (Lambda) Sensor; B1 S1: Internal Resistance too High
P1113 - 35-10 - - - Intermittent
17866 - Exhaust Gas Temp Sensor 2 (G236): Short to Ground
P1458 - 35-00 - -
Readiness: 0010 0001
I am still on the lookout for the EGT sensor but this does not seem to trigger the CEL?
I guess I am right in taking B1 as 'my' drivers side (RHD) or US Passenger side?
Wednesday,01,April,2009,23:28:14:29052
VCDS Version: Release 805.3
Edd's
Address 01: Engine
Control Module Part Number: 4B0 907 551 R
Component and/or Version: 2.7l V6/5VT G 0001
Software Coding: 10712
Work Shop Code: WSC 02325
Additional Info: WAUZZZ4BZ1N048536 AUZ7Z0Y1551952
2 Faults Found:
17521 - Oxygen (Lambda) Sensor; B1 S1: Internal Resistance too High
P1113 - 35-10 - - - Intermittent
17866 - Exhaust Gas Temp Sensor 2 (G236): Short to Ground
P1458 - 35-00 - -
Readiness: 0010 0001
Thread Starter
AudiWorld Super User
Joined: Aug 2002
Posts: 4,918
Likes: 7
From: Warwickshire
That is what I thought. The sensor I fitted is a Bosch 4 wire which looks similar to the one I removed but I had to switch the connector over as it had just long tails.
Are all 4 wire zirconia the same in their heating element and output voltages?
Are all 4 wire zirconia the same in their heating element and output voltages?
Tech Guru
Joined: Oct 2002
Posts: 34,430
Likes: 130
No. O2 sensors are vastly different. Universal sensors are not. Make sure you select the correct part number. Like spark plugs, just because they look the same and fit does not mean they are the same or even similar.
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