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Jonathan

Jonathan 8/18/2012

1995 Toyota T100 DLX 6 Cyl 3.4L

Engine

My truck showed a 170 code having to do with Fuel Trim. I never saw this code before. What does this mean? It runs fine.

1 Answer


Jimm

Jimm 8/18/2012

P0170 indicates a malfunction in the PCM control of the air-fuel ratio. Bank 1 is the side of an engine that has cylinder 1.

Here are the possible cause of P0170

• Dirty or defective MAF sensor
• Vacuum leak
• Defective fuel pressure regulator
• Defective O2 sensor
• Oil contamination in the cam/crank sensor wiring or MAF/O2 sensor connector

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