The P1151 code specifically indicates that the fuel trim is "rich," meaning there is too much fuel being delivered to the engine. This can cause a number of symptoms, including:
- Rich exhaust fumes
- Poor fuel economy
- Rough idling
- Engine stalling
If you see the P1151 code on your Ford vehicle, it is important to have it diagnosed and repaired as soon as possible. Driving with a rich fuel trim can damage the engine and other components of the emission control system.
There are a number of things that can cause the P1151 code, including:
- Dirty or faulty fuel injectors
- A faulty oxygen sensor
- A faulty mass air flow sensor
- A vacuum leak
- A problem with the fuel pressure regulator
A qualified mechanic will be able to diagnose the cause of the P1151 code and recommend the appropriate repairs.
