12V Auxiliary Battery Voltage Too Low


Table of contents

P1C22 SUBARU Possible Causes

  • Faulty 12V Auxiliary Battery
  • 12V Auxiliary Battery harness is open or shorted
  • 12V Auxiliary Battery circuit poor electrical connection

How do I fix code P1C22 SUBARU?

  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’s pins.

Cost of diagnosing the P1C22 SUBARU code

  The cost of diagnosing the P1C22 SUBARU code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P1C22 SUBARU Description

  The Engine Control Module (ECM) monitors the 12V Auxiliary Battery. The ECM sets the OBDII code when the 12V Auxiliary Battery is not to factory specifications.

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