pcm doesn't see o2's working please help.

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05-12-2014, 08:01 PM

transampetews6

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pcm doesn't see o2's working please help.

I have heater voltage at plug and verified sensor wire to pcm. new denso o2s. what else can I check.

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05-12-2014, 09:04 PM

1slowbusa

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How do you know they are not working. Have you connected a scanner to verify there is no signal?

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05-13-2014, 06:39 AM

transampetews6

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Quote:

Originally Posted by 1slowbusa

How do you know they are not working. Have you connected a scanner to verify there is no signal?

I took the car to be tuned and the tuner said they're flat-lined.

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05-14-2014, 12:28 PM

transampetews6

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update 2 new denso o2's bad!

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05-19-2014, 05:31 PM

speedmaniac11m

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same problem here - flat lined O2 sensor readings. Its aggrevating as hell! Good luck

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