Diagnostic Aids

An intermittent problem can be caused by:

• Poor connection at PCM: inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals and poor terminal connection. Inspect wiring harness for damage.
• Damaged harness: inspect the wiring harness damage. If the harness appears to be okay, observe the MAP display on the TECH 2 while moving connectors and wiring harnesses related to the sensor. A change in the display will indicate the location of the fault.

If DTC P0106 cannot be duplicated, the information included in the FAILURE RECORDS data can be useful in determining vehicle mileage since the DTC was set. If it is determined that the DTC occurs intermittently, performing the diagnostic procedures for DTC P1107 may isolate the cause of the fault. See DTC P1107: MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT - INTERMITTENT LOW VOLTAGE .