P0171 Diagnostic Trouble Code Discussion for October 2025
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2016 Ford Explorer Platinum 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FM5K8HT8G P0171: Lean bank 1. Did injector test showed all were within spec. Fuel pressures are both good. Fuel trims are super high….. around 20-28 on the long term on both banks. Cyl 6 is still showing a miss. Map and turbo show same psi koeo…. Smoke test turns up no leaks…. Like I s... |
October 14, 2025 |
