Engine-Codes - Generic - B1491

B1491 Code - Ignition Cylinder Sensor Circuit Failure

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B1491 code possible causes

  • Faulty Ignition Cylinder Sensor
  • Ignition Cylinder Sensor harness is open or shorted
  • Ignition Cylinder Sensor circuit poor electrical connection
  • Faulty Body Control Module (BCM)

|How is the B1491 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the B1491 code

Labor: 1.0

The cost to diagnose the B1491 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B1491 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is B1491 code meaning?

The Body Control Module (BCM) monitors the Ignition Cylinder Sensor. The BCM sets the OBDII code when the Ignition Cylinder Sensor is not to factory specifications.

|Need more information with the B1491 code?

Need more information on how to fix the B1491 code?
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|Need help with a B1491 code?

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