P1354 — Modulation Piston Displacement Sensor Circuit Malfunction

What Does P1354 Mean?

P1354 is a manufacturer-specific diagnostic trouble code: Modulation Piston Displacement Sensor Circuit Malfunction. This code applies to VOLKSWAGEN, BUICK, CADILLAC, CHEVY, CHRYSLER 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 P1354

⚠️ Check Engine Light (MIL) illuminated
⚠️ Erratic Modulation Piston Displacement Sensor readings
⚠️ Related system operating intermittently
⚠️ Reduced engine performance

Common Causes

🔍 Wiring issue in Modulation Piston Displacement Sensor circuit (damaged, chafed, or corroded)
🔍 Faulty Modulation Piston Displacement Sensor connector or terminal
🔍 Failed Modulation Piston Displacement Sensor
🔍 ECM/PCM connection issue

Frequently Asked Questions

What does P1354 mean?

P1354 indicates: Modulation Piston Displacement Sensor Circuit Malfunction. The vehicle's computer has detected that the Modulation Piston Displacement Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1354?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1354 for extended periods may cause additional problems.

How much does it cost to fix P1354?

Repair costs for P1354 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 Modulation Piston Displacement Sensor wiring and connectors
🔧 Replace faulty Modulation Piston Displacement Sensor

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.

P1354: Modulation Piston Displacement Sensor Circuit Malfunction