System too rich

FlashPro questions & answers specific to the 2007-2008 US TSX
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Undefined4door
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Joined: Wed Feb 19, 2020 12:42 am

System too rich

Post by Undefined4door »

So I've been getting a system too rich check engine light, and verified short term fuel trims are -22. I tried leaning out the air fuel wheres trims are -5 but my widebands telling me its 16:1 air fuel which is way to lean. Anythoughts? Closed loop is set to stock sensor reading and open loop is set to wideband on d12.
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Spunkster
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Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: System too rich

Post by Spunkster »

You cannot run closed loop from an after market wideband.

What Wideband are you using?
Undefined4door
Posts: 31
Joined: Wed Feb 19, 2020 12:42 am

Re: System too rich

Post by Undefined4door »

Its a plx unit I have the stock o2 sensor for closed loop purposes. I was just referencing what my wideband reads to how much fuel the ecus pulling.
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Spunkster
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Posts: 22743
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: System too rich

Post by Spunkster »

The stock sensor is a wideband. I would only use that and see what it reads. If it is too rich then it is probably a tuning issue.
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