Engine-Codes - Generic - B1491

B1491 Code - Ignition Cylinder Sensor Circuit Failure

- Code Popularity: 7,322 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1491?

  • 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 to Fix the B1491 Code?

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 Code B1491?

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.

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|What are Code B1491 Possible Symptoms?

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

|What Does the B1491 Code Mean?

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.

B1491 Code - Ignition Cylinder Sensor Circuit Failure

|Need more Information on the B1491 Code?

Need more information on how to fix the B1491 code? Get Access to Factory Service Manuals

|Need Help with the B1491 Code?

Get the B1491 code diagnosed by a professional: Find a repair shop in your area