P0172 Diagnostic Trouble Code Discussion for January 2023
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2010 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMEU6DE9A P0172: System too rich bank 1. I've got this Explorer that's kicking my butt! It came in originally for check engine light on, needing Smog Check. Found rich codes for both banks. Fuel trim shows Bank 1 at around -30% total trim, Bank 2 at around -20%. o2 sensors are switching. Cleaned ... |
January 06, 2023 |
