OBD Guide
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B20A0

Cranking Request Circuit

B20A0 is an OBD-II diagnostic trouble code meaning: Cranking Request Circuit. Common causes: open or short circuit in start request circuit, starter relay fault. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Engine won't start
  • Problems starting the engine
  • Check Engine Light Is On

Causes

  • Open or short circuit in start request circuit
  • Starter relay fault
  • Wiring Harness Problems
  • ECU malfunction
  • Starter Mechanical Problems

How to Fix

  1. Check the integrity of the wiring harness
  2. Check starter relay
  3. Check contacts and connections in the circuit
  4. Test the ECU for errors
  5. Check the mechanical condition of the starter

Related codes

B20A1B20A2P0615

FAQ

What does the B20A0 code mean?

B20A0 is an OBD-II diagnostic trouble code that indicates: Cranking Request Circuit

What causes a B20A0 error code?

The most common causes of B20A0 include: Open or short circuit in start request circuit; Starter relay fault; Wiring Harness Problems; ECU malfunction.

How do I fix a B20A0 diagnostic trouble code?

To fix B20A0: Check the integrity of the wiring harness. Check starter relay. Check contacts and connections in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B20A0?

Yes, but get it checked soon

How much does it cost to fix B20A0?

The estimated repair cost for B20A0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat