Engine-Codes - Generic - P0A27

P0A27 - Hybrid Battery Pack Relay Feedback Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?

P0A27 Possible Causes

  • Faulty Hybrid Battery Cut Off Switch
  • Hybrid Battery Cut Off Switch harness is open or shorted
  • Hybrid Battery Cut Off Switch circuit poor electrical connection

How do I fix code P0A27

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 P0A27 code

Labor: 1.0

The cost of diagnosing the P0A27 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

P0A27 Meaning

The Energy Storage Control Module (ESCM) will monitor the battery cut off switch for overvoltage or an open. The ESCM sets the OBDII code when the Hybrid Battery Cut Off Switch is not to factory specifications.

P0A27 More Information

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