P1908 — Transmission Pressure Circuit Solenoid Open or Short to Ground

What Does P1908 Mean?

P1908 is a manufacturer-specific diagnostic trouble code: Transmission Pressure Circuit Solenoid Open or Short to Ground. 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 P1908

⚠️ Check Engine Light (MIL) illuminated
⚠️ Transmission Pressure not functioning as expected
⚠️ Related system may be in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Faulty Transmission Pressure
🔍 Wiring or connector issue in Transmission Pressure circuit
🔍 Related mechanical or electrical fault
🔍 ECM/PCM issue (rare)

Frequently Asked Questions

What does P1908 mean?

P1908 indicates: Transmission Pressure Circuit Solenoid Open or Short to Ground. The vehicle's computer has detected that the Transmission Pressure is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1908?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1908 for extended periods may cause additional problems.

How much does it cost to fix P1908?

Repair costs for P1908 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 Transmission Pressure and related wiring
🔧 Replace faulty Transmission Pressure

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.

P1908: Transmission Pressure Circuit Solenoid Open or Short to Ground