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P0178 Diagnostic Trouble Code Discussion for February 2009

Fuel Composition Sensor Low Frequency


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Trouble Ticket Help Requests for DTC P0178
Help Request Posted
2002 Chevrolet Tahoe LS 5.3L Poor Fuel Economy, MIL Lamp on VIN: 1GNEK13Z82
P0178: Fuel Composition Sensor Low Frequency. This truck came in with a p0178 scanned and checked info on scanner and ms=0 and frequency=0 when running, wiggled truck and both stay 0. Checked wires at sensor only 3 and has 14.2v on power and ground wires and 7.2 on ref wire, scanner still says 0. Plugged ...
February 16, 2009
2002 Chevrolet Tahoe LS 5.3L Poor Fuel Economy, MIL Lamp on VIN: 1GNEK13Z82
P0178: Fuel Composition Sensor Low Frequency. This truck came in with a p0178 scanned and checked info on scanner and ms=0 and frequency=0 when running, wiggled truck and both stay 0. Checked wires at sensor only 3 and has 14.2v on power and ground wires and 7.2 on ref wire, scanner still says 0. Plugged ...
February 16, 2009