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 a sensor in the car that measures the temperature of a special fuel system is reading too high. It's like a thermometer saying it's hotter than it should be.
The P2A58 code is triggered when the powertrain control module (PCM) detects a high voltage signal from the outlet temperature sensor of the alternative fuel vaporizer B, indicating a higher than expected temperature.
The alternative fuel vaporizer B outlet temperature sensor is responsible for monitoring the temperature of the vaporizer's outlet in vehicles that use alternative fuels. A high circuit signal indicates that the sensor is reporting a temperature that is higher than the acceptable range, which could be due to a sensor fault, wiring issue, or actual overheating.
• Check Engine Light illuminated
• Poor fuel efficiency
• Possible engine performance issues
• Faulty temperature sensor
• Wiring issues such as short to voltage
• Actual overheating of the vaporizer
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the temperature sensor for correct operation.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring or connectors.
• Ensure the vaporizer is not overheating and address any underlying issues.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance of the fuel system
• Periodic inspection of wiring and connectors
• Ensure proper operation of the vaporizer
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid driving the vehicle hard until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on emissions-related components.
This code is relatively uncommon and typically associated with vehicles using alternative fuels.
Moderate – It should be addressed soon to prevent potential damage to the fuel system.
Driving with a faulty temperature sensor can lead to increased emissions and potential safety issues.
• Engine running
• Vehicle at operating temperature
The temperature sensor is typically located near the alternative fuel vaporizer outlet, which may be under the vehicle or in the engine compartment.
Q: Can I drive with a P2A58 code?
A: It's not recommended to drive for extended periods with this code as it may lead to further issues.
Q: How can I reset the Check Engine Light?
A: After repairs, use an OBD-II scanner to clear the code and reset the light.
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