P1153 Bank 2 Fuel Control Shifted Lean
What does P1153 mean on a Ford?
P1153 — Bank 2 Fuel Control Shifted Lean. This Ford-enhanced code applies to F-150, Mustang, Expedition with V6 and V8 engines.
Common causes of P1153
- Small bank 2 vacuum leak
- Drifting bank 2 upstream sensor
- Marginal fuel delivery under load
- Bank 2 injector restriction
- Small exhaust leak ahead of the sensor
How to fix P1153
- Smoke test with attention to the bank 2 runners
- Compare bank trims at cruise and load
- Load-test fuel pressure
- Assess sensor response time
- Clean injectors or replace the sensor per findings