OBD Guide
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B1493

Ignition Cylinder Sensor Battery Short

B1493 is an OBD-II diagnostic trouble code meaning: Ignition Cylinder Sensor Battery Short. Common causes: wiring harness damage, short circuit in ignition cylinder sensor. Estimated repair cost: $56–167.

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

Symptoms

  • Misfires
  • Unstable engine idling
  • Reduced engine power
  • Increased fuel consumption
  • Check Engine Light Illuminates

Causes

  • Wiring harness damage
  • Short circuit in ignition cylinder sensor
  • Problems with contacts in connectors
  • Faulty engine control unit (ECU)

How to Fix

  1. Check the integrity of the wiring harness for damage
  2. Check connections and contacts in sensor connectors
  3. Check the resistance of the ignition cylinder sensor
  4. Replace the sensor if it is faulty
  5. Clear error memory and check if error is returned

Related codes

P0300P0301P0302P0303P0304

FAQ

What does the B1493 code mean?

B1493 is an OBD-II diagnostic trouble code that indicates: Ignition Cylinder Sensor Battery Short

What causes a B1493 error code?

The most common causes of B1493 include: Wiring harness damage; Short circuit in ignition cylinder sensor; Problems with contacts in connectors; Faulty engine control unit (ECU).

How do I fix a B1493 diagnostic trouble code?

To fix B1493: Check the integrity of the wiring harness for damage. Check connections and contacts in sensor connectors. Check the resistance of the ignition cylinder sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1493?

Limited driving only, diagnose soon

How much does it cost to fix B1493?

The estimated repair cost for B1493 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat