DTC P1397: System Voltage Out Of Self-Test Range
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P1397 - SYSTEM VOLTAGE OUT OF SELF-TEST RANGE
| Description: | This DTC indicates the 12-volt system voltage is too high or too low during the key ON engine OFF (KOEO) or key ON engine running (KOER) self-test. It sets if the system voltage falls below or exceeds the calibrated threshold at any time during the KOEO or KOER self-test. | ||
| Possible Causes: |
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| Diagnostic Aids: | Make sure the battery voltage is between 11 and 18 volts before running a KOEO or KOER self-test. Refer to the appropriate Charging System article. to diagnose the battery is discharged or battery voltage is low symptom or the charging system overcharges (battery voltage is greater than 15.5 volts) symptom. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC in table. | ||