I have a recurring CE light and the same code comes up: PO 173 (Fuel trim malfunction) The car is a pristine '97 CL600 with only 70K. I've had it for 3 years with no problems at all. When the light first showed up I replaced the O2 sensors since they were original. After a week the light appears again. This time I replace the drivers side MAF since it was original and didn't respond to a CRC spray. Then a week later the CE light appears. I went back through my records and realized that the...
PO 173 Blues
PO 173 Blues
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