OBD Guide

P0AC7

Hybrid/EV Battery Temperature Sensor B Circuit Low

P0AC7 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Temperature Sensor B Circuit Low. Common causes: faulty battery temperature sensor b, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced performance of the hybrid system
  • Power limitation
  • Incorrect battery temperature readings on the dashboard

Causes

  • Faulty battery temperature sensor B
  • Open or short circuit in the sensor circuit
  • Bad contacts in connectors
  • Wiring harness damage
  • Battery management module malfunction

How to Fix

  1. Check the continuity of the temperature sensor circuit
  2. Inspect connectors and contacts for corrosion or damage
  3. Check the resistance of the temperature sensor
  4. Replace faulty temperature sensor
  5. Test the operation of the system after repair

Related codes

Error P0AC7 by Vehicle Brand

FAQ

What does the P0AC7 code mean?

P0AC7 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Temperature Sensor B Circuit Low

What causes a P0AC7 error code?

The most common causes of P0AC7 include: Faulty battery temperature sensor B; Open or short circuit in the sensor circuit; Bad contacts in connectors; Wiring harness damage.

How do I fix a P0AC7 diagnostic trouble code?

To fix P0AC7: Check the continuity of the temperature sensor circuit. Inspect connectors and contacts for corrosion or damage. Check the resistance of the temperature sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0AC7?

Yes, but get it checked soon

How much does it cost to fix P0AC7?

The estimated repair cost for P0AC7 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat