P0877 — Transmission Fluid Pressure Sensor/Switch D Circuit Low

What Does P0877 Mean?

P0877 is a diagnostic trouble code indicating: Transmission Fluid Pressure Sensor/Switch D Circuit Low. This code relates to the transmission system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P0877

⚠️ Check Engine Light (MIL) illuminated
⚠️ Transmission Fluid Pressure Sensor/Switch D reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Harsh or delayed shifting

Common Causes

🔍 Open or broken wire in Transmission Fluid Pressure Sensor/Switch D circuit
🔍 Poor ground connection at Transmission Fluid Pressure Sensor/Switch D
🔍 Faulty Transmission Fluid Pressure Sensor/Switch D with no output signal
🔍 Disconnected or loose Transmission Fluid Pressure Sensor/Switch D connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P0877 mean?

P0877 indicates: Transmission Fluid Pressure Sensor/Switch D Circuit Low. The vehicle's computer has detected that the Transmission Fluid Pressure Sensor/Switch D is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P0877?

Only short distances if absolutely necessary. P0877 affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix P0877?

Repair costs for P0877 typically range from $20 to $500, 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

🔧 Repair broken wire or restore ground in Transmission Fluid Pressure Sensor/Switch D circuit
🔧 Clean and secure Transmission Fluid Pressure Sensor/Switch D connector and ground points
🔧 Replace failed Transmission Fluid Pressure Sensor/Switch D

1
Find your vehicle above
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2
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P0877: Transmission Fluid Pressure Sensor/Switch D Circuit Low