Fault code P1131

2004 Ford Focus 2004 1.8 16v zetec
Car: Ford Focus
Year: 2004
Variant: 2004 1.8 16v zetec
Categories: Running Rough, Starting & Power Loss
Have changed oxygen sensor up stream of cat replaced inlet manifold due to having a crack in it clear fault from ecu car runs fine for about 20 miles then the same fault returns any suggestions would be most welcome
Problem added: Jul 3, 2018 (5 years ago)
Check the PCV valve and hose .
Answered Jul 3, 2018 (5 years ago)

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