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P0620 - Generator Control Circuit Malfunctionhttp://engine-codes.com/p0620.htmlForum CodePossible causes- Failed Generator/Belt
- Battery charge
- PCM controlled generator
- PCM failure
- Open or short generator circuit When is the code detected?The PCM has fault detection circuitry which monitors the state of the generator turn on signal circuit. If the fault detection circuit senses a voltage other than what is expected, this DTC will set. The voltage regulator also contains fault detection circuitry. If the regulator detects a problem, the regulator will ground the generator turn on signal circuit, pulling the voltage low. This also causes the PCM to set the DTC.
Posted on Nov 05, 2012
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Posted on Jan 02, 2017
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