P1895 — TCM To ECM Torque Reduction Circuit Malfunction

What Does P1895 Mean?

P1895 is a manufacturer-specific diagnostic trouble code: TCM To ECM Torque Reduction Circuit Malfunction. This code applies to SUZUKI, TOYOTA, BUICK, CADILLAC, CHEVY 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 P1895

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic TCM To ECM Torque Reduction readings
⚠️ Related system operating intermittently
⚠️ Reduced engine performance

Common Causes

🔍 Wiring issue in TCM To ECM Torque Reduction circuit (damaged, chafed, or corroded)
🔍 Faulty TCM To ECM Torque Reduction connector or terminal
🔍 Failed TCM To ECM Torque Reduction
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does P1895 mean?

P1895 indicates: TCM To ECM Torque Reduction Circuit Malfunction. The vehicle's computer has detected that the TCM To ECM Torque Reduction is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1895?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1895 for extended periods may cause additional problems.

How much does it cost to fix P1895?

Repair costs for P1895 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 and repair TCM To ECM Torque Reduction wiring and connectors
🔧 Replace faulty TCM To ECM Torque Reduction

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.

P1895: TCM To ECM Torque Reduction Circuit Malfunction