OBD Guide

P0AB5

Hybrid/EV Battery Pack Air Temperature Sensor B Circuit Intermittent/Erratic

P0AB5 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Pack Air Temperature Sensor B Circuit Intermittent/Erratic. Common causes: open or short circuit in the sensor circuit, temperature sensor b fault. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine light comes on
  • Hybrid system power reduction
  • Incorrect battery temperature readings
  • Reducing the range of an electric vehicle
  • Activation of emergency operation

Causes

  • Open or short circuit in the sensor circuit
  • Temperature sensor B fault
  • Poor contact in circuit connectors
  • Wiring harness damage
  • Battery management module malfunction

How to Fix

  1. Check the continuity of the temperature sensor circuit
  2. Check resistance and sensor signal
  3. Inspect connectors and contacts for corrosion or damage
  4. If necessary, replace temperature sensor B
  5. Repair only from an authorized dealer

Related codes

Error P0AB5 by Vehicle Brand

FAQ

What does the P0AB5 code mean?

P0AB5 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Pack Air Temperature Sensor B Circuit Intermittent/Erratic

What causes a P0AB5 error code?

The most common causes of P0AB5 include: Open or short circuit in the sensor circuit; Temperature sensor B fault; Poor contact in circuit connectors; Wiring harness damage.

How do I fix a P0AB5 diagnostic trouble code?

To fix P0AB5: Check the continuity of the temperature sensor circuit. Check resistance and sensor signal. Inspect connectors and contacts for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0AB5?

Limited driving only, diagnose soon

How much does it cost to fix P0AB5?

The estimated repair cost for P0AB5 is $28–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat