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Discussion Starter #1
Driving home today my check engine light came on. Did the paperclip test and got three codes. 118- Engine coolant temperature sensor above maximum voltage / 0-40?C indicated. 157- Manifold Air Flow sensor fault, low voltage. 332- Insufficient EGR flow detected. Its really weird I get all these faults at once and I have a splitport swap so I have really no idea where to start.
 

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I would look for a ground problem first since they all popped up at the same time.
 

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Discussion Starter #3
Took a closer look and found a melted vacuum line running to the EGR. Cleared the codes and Ill recheck tomorrow if any of the codes come back.
 

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Vacuum line could cause the EGR malfunction.

The other two codes .. usually a short would indicate Low voltage on the PCM side, the High voltage would be from an Open circuit.
 

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Discussion Starter #5
Drove it around today and none of the codes came back. Ill check again later next week.
 
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