Engine-Codes - Generic - P1397

P1397 Code - System Voltage Out Of Self Test Range

- Code Popularity: 26,261 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P1397?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Alternator belt loose or missing
  • Low battery voltage
  • Faulty Charging System
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How to Fix the DTC P1397?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1397 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1397 Code Mean?

The P1397 code indicates that 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.

P1397 Code - System Voltage Out Of Self Test Range

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Code P1397 Information for Specific Makes

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