FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Intermittent Conditions

The DTC tables in this section determine if there is a fault within the circuit. The fault must be present in order to locate the condition. If an intermittent condition occurs, a DTC is stored in history status, but a check of the circuit will indicate a normal condition. When diagnosing intermittent trouble codes, thoroughly check the suspected circuit for the following conditions:
- Poor terminal tension
- Poor setting of the connector halves
- Poor connections between the terminal and the wire
- Improperly formed or damaged terminals
- Faulty PCM power or ground connections
- Electrical system surges which are caused by a defective relay, solenoid, or switch. Normally these conditions occur when the faulty component is operated.
- Electromagnetic Interference (EMI).