OBD Guide
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B28A5

Engine Torque Limiter Control Prohibit

B28A5 is an OBD-II diagnostic trouble code meaning: Engine Torque Limiter Control Prohibit. Common causes: throttle position sensor malfunction, control wiring harness problems. Estimated repair cost: $56–167.

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

Symptoms

  • Reduced engine power
  • Unstable idling
  • Check Engine Light Illuminates

Causes

  • Throttle Position Sensor Malfunction
  • Control wiring harness problems
  • Engine control unit (ECU) malfunction
  • Mechanical problems in the intake system

How to Fix

  1. Check trouble codes using an OBD-II scanner
  2. Inspect the wiring harness for damage
  3. Check the operation of the throttle position sensor
  4. Test the engine control unit
  5. If necessary, replace faulty components

Related codes

P0120P0121P0220P0221

FAQ

What does the B28A5 code mean?

B28A5 is an OBD-II diagnostic trouble code that indicates: Engine Torque Limiter Control Prohibit

What causes a B28A5 error code?

The most common causes of B28A5 include: Throttle Position Sensor Malfunction; Control wiring harness problems; Engine control unit (ECU) malfunction; Mechanical problems in the intake system.

How do I fix a B28A5 diagnostic trouble code?

To fix B28A5: Check trouble codes using an OBD-II scanner. Inspect the wiring harness for damage. Check the operation of the throttle position sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B28A5?

Limited driving only, diagnose soon

How much does it cost to fix B28A5?

The estimated repair cost for B28A5 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat