Learn what P0171 code means, its symptoms, causes, and repair cost. Find out if it’s safe to drive and how to fix it fast.
Symptoms:
- Rough idle
- Poor fuel economy
- Engine hesitation
- Check engine light
Causes:
- Dirty MAF sensor
- Vacuum leaks
- Weak fuel pump
Fix:
Start by cleaning the MAF sensor and checking for vacuum leaks. These fixes solve most cases.
Cost:
$40 – $130 depending on issue severity.
Can You Drive?
Yes, but only short distances.