Meaning, the relay is de-energized as well. The fifth wire, on the other hand, is the power relay sense circuit, and the PCM uses it to monitor the power relay voltage.Įrror Code P068A is stored when the ECM/PCM has determined a defect in the de-energizing procedure for the relay which supplies it with voltage. A third circuit will carry the signal from the ignition switch, while the fourth will supply voltage to the PCM. Constant battery voltage is applied in one wire and ground to the other. This type or relay usually uses five-wire design. It’s a contact type relay activated with a signal wire from the ignition switch. The PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes) comes with a power relay that provides battery voltage safely to the right PCM circuits. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model to another. Some of the most common brands that come up with this code include Audi, Cadillac, Chevrolet, Dodge, Ford, Jeep, Volkswagen, etc. This code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II system, especially those made since 1996 up to present. Error Code P068A is defined as ECM/PCM Power Relay De-Energized Performance – Too Early.
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