Having problems with your Ford Escort ?
Hello and thank you four time.I have a 2003 zx2 with a trouble code of po171 .is there a know malfunction that the ZX2 of 2003 has that will set off this code. Thank you . Tom.H
System too lean bank 1
- The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails when the adapative fuel tables reach a rich calibrated limit
- Fuel plugged or dirty /Damaged or worn fuel pump /fuel supply line restricted \015\012
- Exhaust leaks in the exhaust manifold or gasket or mating gasket before or near the heated oxygen sensor (HO2S) \015\012
- Air leaks after the mass air flow sensor ,vacuum leaks \015\012
- Damaged or contaminated maf sensor
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.