P2027 — EVAP Fuel Vapor Temperature Sensor Circuit High Voltage

What Does P2027 Mean?

P2027 is a diagnostic trouble code indicating: EVAP Fuel Vapor Temperature Sensor Circuit High Voltage. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of P2027

⚠️ Check Engine Light (MIL) illuminated
⚠️ EVAP Fuel Vapor Temperature Sensor reading stuck at maximum value
⚠️ Related system operating erratically or in default mode
⚠️ Reduced engine performance

Common Causes

🔍 Short to voltage in EVAP Fuel Vapor Temperature Sensor wiring harness
🔍 Corroded or water-damaged EVAP Fuel Vapor Temperature Sensor connector
🔍 Faulty EVAP Fuel Vapor Temperature Sensor outputting maximum voltage
🔍 Damaged wiring rubbing against metal components
🔍 ECM/PCM internal fault (rare)

Frequently Asked Questions

What does P2027 mean?

P2027 indicates: EVAP Fuel Vapor Temperature Sensor Circuit High Voltage. The vehicle's computer has detected that the EVAP Fuel Vapor Temperature Sensor is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P2027?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P2027 for extended periods may cause additional problems.

How much does it cost to fix P2027?

Repair costs for P2027 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

🔧 Inspect and repair EVAP Fuel Vapor Temperature Sensor wiring for short to voltage
🔧 Clean or replace corroded EVAP Fuel Vapor Temperature Sensor connector
🔧 Replace faulty EVAP Fuel Vapor Temperature 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.

P2027: EVAP Fuel Vapor Temperature Sensor Circuit High Voltage