OBD Guide
ENFRDEESPT

P1B15

Regenerative Braking Torque Request Signal Message Counter Incorrect

P1B15 is an OBD-II diagnostic trouble code meaning: Regenerative Braking Torque Request Signal Message Counter Incorrect. Common causes: torque sensor malfunction, problems with the hybrid system control module. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced efficiency of regenerative braking
  • Increased load on traditional brakes
  • Unstable operation of the hybrid system
  • Check Engine Light Illuminated
  • Low battery power

Causes

  • Torque sensor malfunction
  • Problems with the hybrid system control module
  • Wiring damage
  • Software error
  • Battery problems

How to Fix

  1. Check torque sensors
  2. Diagnose the hybrid system control module
  3. Check wiring integrity
  4. Update software
  5. Check the condition of the battery

Related codes

P1B14P1B16P0A80

FAQ

What does the P1B15 code mean?

P1B15 is an OBD-II diagnostic trouble code that indicates: Regenerative Braking Torque Request Signal Message Counter Incorrect

What causes a P1B15 error code?

The most common causes of P1B15 include: Torque sensor malfunction; Problems with the hybrid system control module; Wiring damage; Software error.

How do I fix a P1B15 diagnostic trouble code?

To fix P1B15: Check torque sensors. Diagnose the hybrid system control module. Check wiring integrity. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1B15?

Limited driving only, diagnose soon

How much does it cost to fix P1B15?

The estimated repair cost for P1B15 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat