B2789 Scion Code - No Response From ID BOX
Quick Answer
This Diagnostic Trouble Code (DTC) is stored when Local Interconnect Network (LIN) communication between the Certification ECU (Smart Key ECU Assembly) and ID Code Box (Immobilizer Code ECU) stops for 10 seconds or more. Common causes include Faulty ID Code Box (Immobilizer Code ECU), ID Code Box (Immobilizer Code ECU) harness is open or shorted, ID Code Box (Immobilizer Code ECU) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2789 Scion indicates No Response From ID BOX.
- Common causes
- Common causes include Faulty ID Code Box (Immobilizer Code ECU), ID Code Box (Immobilizer Code ECU) harness is open or shorted, ID Code Box (Immobilizer Code ECU) circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B2789 Scion Description
What are the Possible Causes of the DTC B2789 Scion?
- Faulty ID Code Box (Immobilizer Code ECU)
- ID Code Box (Immobilizer Code ECU) harness is open or shorted
- ID Code Box (Immobilizer Code ECU) circuit poor electrical connection
- Faulty Certification ECU (Smart Key ECU Assembly)
How to Fix the DTC B2789 Scion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2789 Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B2789 Scion Code
1. What does OBDII code B2789 mean on a Scion?
Code B2789 indicates "No Response From ID BOX," meaning the vehicle’s immobilizer system is not communicating properly with the ID box.
2. What are the symptoms of code B2789 in a Scion?
Common symptoms include the engine not starting, the immobilizer warning light staying on, or intermittent starting issues.
3. What causes the B2789 code in a Scion?
The code can be caused by a faulty ID box, wiring or connection issues, a damaged key fob, or a malfunctioning immobilizer system.
4. Can a weak or dead key fob battery cause code B2789?
Yes, a weak or dead key fob battery can prevent communication with the ID box, triggering the B2789 code.
5. How do I diagnose code B2789 on my Scion?
Start by checking the key fob battery, inspecting the wiring and connectors to the ID box, and using a scan tool to verify the fault.
6. Where is the ID box located in a Scion?
The ID box is typically located under the dashboard near the steering column but may vary by model.
7. Can I clear the B2789 code without fixing the issue?
Clearing the code without addressing the root cause will likely result in the code returning and persistent starting issues.
8. How much does it cost to fix code B2789 on a Scion?
Repair costs vary but may range from $100 to $500 depending on whether the issue is with the key fob, wiring, or ID box replacement.
9. Can a dealership reprogram the ID box to fix code B2789?
Yes, a dealership can reprogram or replace the ID box to resolve the issue if reprogramming is necessary.
10. Is it safe to drive with code B2789 active?
No, it may prevent the vehicle from starting or cause intermittent starting problems, making it unreliable to drive.
Discuss the causes and fixes for B2789 Scion OBDII Code
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