OBD Guide
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B1494

Ignition Cylinder Sensor Ground Short

B1494 is an OBD-II diagnostic trouble code meaning: Ignition Cylinder Sensor Ground Short. Common causes: wiring damage, ignition cylinder sensor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Unstable engine operation
  • Misfires
  • Difficulty starting the engine
  • Power Loss

Causes

  • Wiring damage
  • Ignition cylinder sensor malfunction
  • Poor contact in connectors
  • Short circuit to ground

How to Fix

  1. Check the integrity of the wiring in the sensor circuit
  2. Check sensor connectors for oxidation or damage.
  3. Check the resistance of the ignition cylinder sensor
  4. Replace sensor if necessary
  5. Clean or replace damaged wires

Related codes

P0300P0301P0302P0303P0304

FAQ

What does the B1494 code mean?

B1494 is an OBD-II diagnostic trouble code that indicates: Ignition Cylinder Sensor Ground Short

What causes a B1494 error code?

The most common causes of B1494 include: Wiring damage; Ignition cylinder sensor malfunction; Poor contact in connectors; Short circuit to ground.

How do I fix a B1494 diagnostic trouble code?

To fix B1494: Check the integrity of the wiring in the sensor circuit. Check sensor connectors for oxidation or damage.. Check the resistance of the ignition cylinder sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1494?

Limited driving only, diagnose soon

How much does it cost to fix B1494?

The estimated repair cost for B1494 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat