P1628 — Powertrain Control Module ECM TCS Any Line Communication Error

What Does P1628 Mean?

P1628 is a manufacturer-specific diagnostic trouble code: Powertrain Control Module ECM TCS Any Line Communication Error. This code applies to MAZDA, VOLKSWAGEN, OTHER, BUICK, CADILLAC 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 P1628

⚠️ Check Engine Light (MIL) illuminated
⚠️ Powertrain Control Module ECM TCS Any Line Communication Error not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Powertrain Control Module ECM TCS Any Line Communication Error
🔍 Wiring or connector issue in Powertrain Control Module ECM TCS Any Line Communication Error circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1628 mean?

P1628 indicates: Powertrain Control Module ECM TCS Any Line Communication Error. The vehicle's computer has detected that the Powertrain Control Module ECM TCS Any Line Communication Error is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1628?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1628 for extended periods may cause additional problems.

How much does it cost to fix P1628?

Repair costs for P1628 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 Powertrain Control Module ECM TCS Any Line Communication Error and related wiring
🔧 Replace faulty Powertrain Control Module ECM TCS Any Line Communication Error

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.

P1628: Powertrain Control Module ECM TCS Any Line Communication Error