P28E9 — Shift Motor Position Sensor Circuit Low

What Does P28E9 Mean?

P28E9 is a diagnostic trouble code indicating: Shift Motor Position Sensor Circuit Low. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P28E9

⚠️ Check Engine Light (MIL) illuminated
⚠️ Shift Motor Position Sensor reading at zero or minimum value
⚠️ Related system not functioning or in fail-safe mode
⚠️ Reduced engine performance

Common Causes

🔍 Open or broken wire in Shift Motor Position Sensor circuit
🔍 Poor ground connection at Shift Motor Position Sensor
🔍 Faulty Shift Motor Position Sensor with no output signal
🔍 Disconnected or loose Shift Motor Position Sensor connector
🔍 Blown fuse in related circuit

Frequently Asked Questions

What does P28E9 mean?

P28E9 indicates: Shift Motor Position Sensor Circuit Low. The vehicle's computer has detected that the Shift Motor Position Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P28E9?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P28E9 for extended periods may cause additional problems.

How much does it cost to fix P28E9?

Repair costs for P28E9 typically range from $20 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

🔧 Repair broken wire or restore ground in Shift Motor Position Sensor circuit
🔧 Clean and secure Shift Motor Position Sensor connector and ground points
🔧 Replace failed Shift Motor Position Sensor

1
Find your vehicle above
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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.

P28E9: Shift Motor Position Sensor Circuit Low