Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the sensor that measures the temperature of fuel vapors. It's saying the sensor is getting too much electricity.
The P2027 code indicates that the voltage from the EVAP fuel vapor temperature sensor is higher than expected, suggesting a potential issue with the sensor or its circuit.
The EVAP (Evaporative Emission Control System) fuel vapor temperature sensor measures the temperature of fuel vapors in the system. A high voltage reading suggests that the sensor might be faulty, the wiring may be damaged, or there could be a problem with the sensor's connection to the vehicle's computer.
• Check Engine Light is on
• Possible fuel odor
• Reduced fuel efficiency
• Faulty EVAP fuel vapor temperature sensor
• Damaged or corroded wiring or connectors
• Faulty powertrain control module (PCM)
EVAP: Evaporative Emission Control System
PCM: Powertrain Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the EVAP fuel vapor temperature sensor and its wiring for damage.
• Test the sensor's voltage output with a multimeter.
• Replace the EVAP fuel vapor temperature sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regularly inspect EVAP system components.
• Keep electrical connections clean and dry.
• Perform routine vehicle maintenance.
Sensor Issue
• Address the issue promptly to avoid further damage.
• Consult a professional mechanic if unsure about repairs.
Check vehicle warranty for coverage on emissions-related components.
This code has been associated with sensor failures and wiring issues in various vehicle models.
Moderate – Should be addressed soon to avoid potential emissions issues.
Ignoring emissions-related codes can lead to increased pollution and may affect vehicle inspection compliance.
• Vehicle at operating temperature
• EVAP system under normal operating conditions
The EVAP fuel vapor temperature sensor is typically located near the fuel tank or along the EVAP system lines.
Q: Can I drive with a P2027 code?
A: You can drive with this code, but it's best to fix it soon to avoid emissions issues.
Q: Will a P2027 code cause my car to fail an emissions test?
A: Yes, a P2027 code can cause your car to fail an emissions test due to potential increased emissions.
High-End · Full-system diagnostics
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant when EVAP diagnosis points toward purge-flow or purge-control faults.
EVAP diagnosis often includes purge-flow and valve-control faults.
Confirm the failed valve and exact fitment before buying parts.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.