'97 S420 - replaced o2 sensors, check eng. light still coming on
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'97 Mercedes S420
'97 S420 - replaced o2 sensors, check eng. light still coming on
Hi guys, I replaced both left side o2 sensors, still getting same codes I got before, which were P0153 - o2 sensor circuit slow response (bank 2 sensor 1), and P0160 - o2 sensor circuit no activity (bank 2 sensor 2). From what I understand this usually indicates faulty sensors or faulty wiring. Unless I got new defective sensors this should indicate faulty wiring. Any advice on how to fix or isolate the issue would be greatly appreciated. Thanks!
#2
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I have heard the V8s have a wire in the harness that rubs on the blok.It can be repaired.Check all your connections too.Some codes will take a number of key on's to reset too.