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by Bob O’Neill and Bob Lincoln
Code 46 is triggered when the voltage sense input is more than one volt above the target voltage for 20 seconds, as sensed by the computer. When code 46 is triggered the power limited light will be lit and the system will not enter limp mode. When the charging voltage falls below one volt of the target voltage the power limited light will go out but the code will still be stored.
Possible reasons include poor wiring or connections (see ‘How to troubleshoot drivability issues’, check the wiring and connections from the logic module to the power module, and clean and re-grease the connectors with dielectric grease); or a defective voltage regulator circuit (see Diagnosing Your Charging System).
Sensors, Switches, and Other Systems | Main Repairs Page | EEKs
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