ERROR CODE P157

Ford Expedition

Tiny

kallinsteve

November, 17, 2007 AT 11:20 AM

2001 expediton 85000
I got the code today. Auto zone doesnt know what it is.
The paper said Idle Air Control System Underspeed error. What does it mean. Thanks, Steve

FOUND 7 RELATED QUESTIONS

1 Answer

Tiny

merlin2021

November, 17, 2007 AT 11:39 AM

What it means is the RPM's are lower than the PCM wants, IAC valve or circuit should be checked, and or a clogged intake airway? How is your air filter?

Please login or register to post a reply.