Engine-Codes - Toyota - B2799 Toyota

B2799 Toyota Code - Engine Immobiliser System Malfunction

- Code Popularity: 244,910 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B2799 Toyota?

    Without Smart Key
  • Faulty Transponder Key ECU Assembly
  • Transponder Key ECU Assembly harness is open or shorted
  • Transponder Key ECU Assembly circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
    With Smart Key
  • Faulty Certification ECU (Smart Key ECU Assembly)
  • Certification ECU harness is open or shorted
  • Certification ECU circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

|How to Fix the B2799 Toyota 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 B2799 Toyota?

Labor: 1.0

The cost to diagnose the B2799 Toyota 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 B2799 Toyota Possible Symptoms?

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

|What Does the B2799 Toyota Code Mean?

The Engine Control Module (ECM) stores this Diagnostic Trouble Code (DTC) when the communication line between the ECM and Transponder Key ECU Assembly is malfunctioning, or the communication ID of the ECM and Transponder Key ECU Assembly does not match.
For vehicles with Smart Key, this DTC will be set when there are communication malfunctions between the ECM and certification ECU (Smart Key ECU Assembly), or when the communication ID codes do not match, the ECM stores this DTC.
Before troubleshooting this DTC, ensure that no DTC is detected in the transponder key ECU. If there is a key code-related DTC detected in the Transponder Key ECU Assembly or Certification ECU (Smart Key ECU Assembly), repair it first.

B2799 Toyota Code - Engine Immobiliser System Malfunction

|Need more Information on the B2799 Toyota Code?

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|Need Help with the B2799 Toyota Code?

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