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Engine Computer Code 435 and 436 850 1995

posted by  beherenow on  Tue Sep 17 07:32 CST 2002
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Does anyone know what engine computer codes 435 and 436 mean? The check engine light came on and my mechanic could not decipher these codes.








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Engine Computer Code 435 and 436 850 1995

posted by  someone claiming to be Mike on  Tue Sep 17 08:16 CST 2002 [RELATED]

435 is heated oxygen sensor
436 is rear heated oxygen sensor








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....BUT it's really caused by a vacuum leak 850 1995

posted by  someone claiming to be Glen on  Tue Sep 17 15:58 CST 2002 [RELATED]

When one gets both of THOSE two codes at the same time, it's never both O2 sensors that suddenly went bad, it's really caused by a vacuum hose leak SO have your tech look for cracked or broken vacuum hoses instead of replacing two costly O2 sensors.








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....BUT it's really caused by a vacuum leak 850 1995

posted by  chopper on  Wed Sep 18 08:48 CST 2002
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Also, O2 sensors arn't fused, so that can cause a bit of trouble. You're right, it's never both. (Assuming those codes arn't from a different socket than A2.)

Brandon
95 854T 92k







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