Diagnostic Aids

Footnotes are referenced throughout Pin Voltage/PID Value Tables and indicate additional information is available to aid in diagnosis. Pin Voltage/PID Value Tables do not display fault PIDs. These are PIDs which indicate a hard fault with the circuit. They display a value of YES or NO and are PIDs ending in the letter "F".

Reference values may vary plus or minus 20 percent depending on operating conditions and other factors. RPM values are axle and tire dependent. For downstream O2S (12 and 22), greater activity will result when catalyst monitor is active. Refer to scan tool operating guide for PID descriptions.