Need help with P0174 Code: System Too Lean (Cylinder Bank 2)
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Hey everyone,
I'm encountering a persistent P0174 code: System Too Lean (Cylinder Bank 2) and could use some guidance. Here's a brief history of what I've done so far:
Next Steps:
Thanks in advance!
I'm encountering a persistent P0174 code: System Too Lean (Cylinder Bank 2) and could use some guidance. Here's a brief history of what I've done so far:
- P0101 Issue:
- Cleaned the MAF sensor – code persisted.
- Replaced with a new OEM MAF sensor – P0101 code resolved.
- P0174 Code Appeared After Replacing Spark Plugs:
- Checked for vacuum leaks using water – no leaks found.
- MAF sensor is brand new.
- Replaced the PCV valve (was in bad shape, had a rotten egg smell) – smell issue resolved.
Next Steps:
- Plan to change the A/F sensor (Bank 2, Sensor 1) and hope it resolves the issue.
Thanks in advance!
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