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How do I keep the check engine light off?


 
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tylerwaltz26
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Age: 22
Joined: 08 Feb 2016
Posts: 10




Post: #1   PostPosted: Thu Apr 28, 2016 5:12 am    Post subject: How do I keep the check engine light off? Reply with quote

I have an 02 es and it has codes for emissions and low voltage on o2 sensor 1-2. both of these are caused by modifications and I want to know if there is a way to keep them from turning on my engine light, without pulling the bulb.
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occasional demons
Mr One World
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Age: 51
Joined: 03 May 2007
Posts: 19781
Location: Ashland, Ohio

2001 Dodge Neon ES

Post: #2   PostPosted: Thu Apr 28, 2016 8:12 am    Post subject: Reply with quote

Without proper o2 sensor input there is no way to keep it from setting a code/turning on the CEL. Sensor 2, there is the spark plug non fouler trick, which is hit and miss, but sensor 1, there is no work around. It is a major parameter for air fuel ratios.

Unless you are running a piggyback engine management, you will have issues with a poor 1/1 o2 sensor input. Not sure why you would need to defeat the 1/1, and still use the factory PCM.

Even aftermarket engine management uses the upstream o2.
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2001 neon ES MTX with '02 R/T PCM
1999 neon 2.4 EDZ MTX
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