OBD II Serviceability Issues

Based on the knowledge gained from OBD II experience in the 94 and 95 model years, this list of non-vehicle faults that could affect the performance of the OBD II system has been compiled.These non-vehicle faults vary from environmental conditions to the quality of fuel used.

With the introduction of OBD II diagnostics across the entire passenger car and light-duty truck market in 1996, illumination of the MIL ("Check Engine" lamp) due to a non-vehicle fault could lead to misdiagnosis of the vehicle, increased warranty expense and customer dissatisfaction. The following list of non-vehicle faults does not include every possible fault and may not apply equally to all product lines.