U2012 — Communication Bus Error (Non SCP)

What Does U2012 Mean?

U2012 is a manufacturer-specific diagnostic trouble code: Communication Bus Error (Non SCP). This code applies to OTHER vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of U2012

⚠️ Check Engine Light (MIL) illuminated
⚠️ Communication Bus Error (Non SCP) not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ System warning light illuminated

Common Causes

🔍 Faulty Communication Bus Error (Non SCP)
🔍 Wiring or connector issue in Communication Bus Error (Non SCP) circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does U2012 mean?

U2012 indicates: Communication Bus Error (Non SCP). The vehicle's computer has detected that the Communication Bus Error (Non SCP) is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code U2012?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with U2012 for extended periods may cause additional problems.

How much does it cost to fix U2012?

Repair costs for U2012 typically range from $80 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Communication Bus Error (Non SCP) and related wiring
🔧 Replace faulty Communication Bus Error (Non SCP)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

U2012: Communication Bus Error (Non SCP)