Engine-Codes - Generic - B1271

B1271 Code - Theft Protection Active

- Code Popularity: 14,654 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1271?

  • Reprogram Control Module
  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

|How to Fix the B1271 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 B1271?

Labor: 1.0

The cost to diagnose the B1271 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 B1271 Possible Symptoms?

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

|What Does the B1271 Code Mean?

When the Control Module is initially installed in the vehicle, the Control Module receives Vehicle Identification Number (VIN) information via serial data. The Control Module stores a portion of the VIN and compares this sequence to the VIN information received each time the Control Module powers on. The VIN in the Control Module is a single one-time learn.
The Control Module theft deterrent system is intended to disable or limit Control Module functionality if incorrect vehicle information is received by the Control Module. The Control Module disables functionality if the VIN information received by the Control Module does not match the VIN information that has been learned by the Control Module. This DTC is generated by the module when the Theft Protection is activated.

Theft Protection Active

|Need more Information on the B1271 Code?

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|Code B1271 Information for Specific Makes

|Need Help with the B1271 Code?

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