OBD-II Network Error Code U0167: How to Fix It
Medium 1-3 hours Critical Severity
Verified June 2026
- Error Code
- U0167
- Brand
- OBD-II Network
- Product Type
- automotive
- Severity
- Critical
- DIY Difficulty
- Medium
- Estimated Fix Time
- 1-3 hours
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Tools You'll Need
- OBD2 scanner
- Digital multimeter
- Basic hand tools
- Wire strippers
- Electrical contact cleaner
How to Fix Error Code U0167
-
Verify the Error Code
Ensure the vehicle is parked safely with the parking brake engaged before connecting diagnostic equipment. -
Check Battery Voltage
Wear safety glasses and gloves when working around the battery. Remove jewelry to avoid short circuits. -
Inspect Immobilizer Module Fuses
-
Examine Wiring Harnesses
Disconnect the negative battery terminal before handling any electrical connections to prevent short circuits. -
Test Immobilizer Module Power and Ground
-
Check CAN Bus Network Integrity
Only perform this test with the ignition OFF and all modules connected to avoid damaging the CAN bus network. -
Attempt Module Reset
This will reset radio presets and may require relearning procedures for some vehicle systems. -
Scan for Updated Codes
Parts You May Need
Immobilizer control module
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Automotive fuses
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Electrical connector pigtails
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Automotive wire and terminals
Check Price on Amazon
Immobilizer control module
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Electrical connector pigtails
Check Price on Amazon
Automotive wire and terminals
Check Price on Amazon
Immobilizer control module
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Electrical connector pigtails
Check Price on Amazon
Automotive wire and terminals
Check Price on Amazon
Immobilizer control module
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Electrical connector pigtails
Check Price on Amazon
Automotive wire and terminals
Check Price on Amazon
Immobilizer control module
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Electrical connector pigtails
Check Price on Amazon
Automotive wire and terminals
Check Price on Amazon
Immobilizer control module
Check Price on Amazon
Automotive fuses
Check Price on Amazon
Electrical connector pigtails
Check Price on Amazon
Automotive wire and terminals
Check Price on Amazon
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When to Call a Professional
If the immobilizer module needs replacement or reprogramming, contact a qualified automotive technician or dealership. These modules often require specialized programming tools and security procedures that are not available to DIY mechanics. Also seek professional help if you're uncomfortable working with electrical systems or if multiple communication codes are present.Frequently Asked Questions
Can I drive my car with error code U0167?
You should not drive with code U0167 if it's preventing the vehicle from starting. If the car runs but shows this code, drive carefully to a repair facility as the immobilizer system may fail and leave you stranded.
What causes U0167 error code?
Common causes include damaged wiring between the PCM and immobilizer module, faulty immobilizer control module, blown fuses, low battery voltage, or CAN bus network problems.
How much does it cost to fix U0167?
Costs vary widely depending on the root cause. Simple fixes like fuses or wiring repairs may cost $50-200. Immobilizer module replacement can cost $300-800 including programming. Always get a proper diagnosis first.
Will disconnecting the battery fix U0167?
Sometimes a battery disconnect reset can clear temporary communication errors, but if the underlying problem (damaged wiring, faulty module) persists, the code will return.
Is U0167 the same as an anti-theft code?
Yes, U0167 is related to the anti-theft immobilizer system. It specifically indicates lost communication with the immobilizer control module, which is a key component of your vehicle's anti-theft protection.