OBD Guide
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B218B

Ignition Run/Start 1 Control Circuit Overcurrent

B218B is an OBD-II diagnostic trouble code meaning: Ignition Run/Start 1 Control Circuit Overcurrent. Common causes: short circuit in ignition control circuit, ignition coil malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Difficulty starting the engine
  • Engine failures
  • Stalling engine
  • Lights up in Linuxicator engine fault (Check Engine)

Causes

  • Short circuit in ignition control circuit
  • Ignition coil malfunction
  • Wiring harness damage
  • Engine control unit (ECU) malfunction
  • Corroded or loose contact connections

How to Fix

  1. Check the wiring harness for damage or short circuit
  2. Check the resistance and condition of the ignition coil
  3. Check contact connections for corrosion or looseness
  4. Scan the system for other error codes
  5. Replace faulty components or wiring harness as necessary

Related codes

P0351P0352P0353P0354

FAQ

What does the B218B code mean?

B218B is an OBD-II diagnostic trouble code that indicates: Ignition Run/Start 1 Control Circuit Overcurrent

What causes a B218B error code?

The most common causes of B218B include: Short circuit in ignition control circuit; Ignition coil malfunction; Wiring harness damage; Engine control unit (ECU) malfunction.

How do I fix a B218B diagnostic trouble code?

To fix B218B: Check the wiring harness for damage or short circuit. Check the resistance and condition of the ignition coil. Check contact connections for corrosion or looseness. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B218B?

Limited driving only, diagnose soon

How much does it cost to fix B218B?

The estimated repair cost for B218B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat