2015 K2500 Error code: P2097, How do I fix it? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

WyattTX · 11-16-2019, 07:54 AM

My check engine light came on and the code reader says "Post Catylist Fuel Trim System too rich Bank 1." The truck in question has the 6.0 engine and 6l90 transmission. Thanks for any help.

**Palf70Step** · 11-16-2019, 09:46 AM

Chances are you have a bad O2 sensor on bank 1. Drivers side before the cat. Sometimes leaky exhaust cause the goofy readings also that throw the code. If it is not rusty looking before the cat and you can't see/feel a leak, then probably change the o2 sensor

WyattTX · 11-17-2019, 11:20 PM

Thanks, I'll investigate the matter. Is there any way to function check an O2 sensor? I recently damaged and repaired my exaust. I'm thinking the leaks that occurred while it was still broken may have triggered this, but it could be unrelated, so I want to check the O2 sensor out to be safe.

11-16-2019, 07:54 AM	#1
WyattTX Registered User Join Date: Nov 2015 Location: Down south Posts: 518	2015 K2500 Error code: P2097, How do I fix it? My check engine light came on and the code reader says "Post Catylist Fuel Trim System too rich Bank 1." The truck in question has the 6.0 engine and 6l90 transmission. Thanks for any help.

11-16-2019, 09:46 AM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,228	Re: 2015 K2500 Error code: P2097, How do I fix it? Chances are you have a bad O2 sensor on bank 1. Drivers side before the cat. Sometimes leaky exhaust cause the goofy readings also that throw the code. If it is not rusty looking before the cat and you can't see/feel a leak, then probably change the o2 sensor __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

11-17-2019, 11:20 PM	#3
WyattTX Registered User Join Date: Nov 2015 Location: Down south Posts: 518	Re: 2015 K2500 Error code: P2097, How do I fix it? Thanks, I'll investigate the matter. Is there any way to function check an O2 sensor? I recently damaged and repaired my exaust. I'm thinking the leaks that occurred while it was still broken may have triggered this, but it could be unrelated, so I want to check the O2 sensor out to be safe.



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