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 found a problem with the sensor that checks the pressure in the extra fuel tank. It's like a thermometer that isn't working correctly to tell if the tank is full or empty.
The P019E code is triggered when the Engine Control Module (ECM) detects a malfunction in the pressure sensor circuit of the alternative fuel tank, which could be due to electrical issues or sensor failure.
The P019E code indicates that the ECM has detected an issue with the circuit responsible for measuring the pressure in the alternative fuel tank (Tank A). This could involve issues with the sensor itself, wiring problems, or a faulty ECM. The pressure sensor is crucial for maintaining the correct fuel pressure and ensuring efficient fuel delivery to the engine.
• Check Engine Light on
• Poor fuel efficiency
• Difficulty starting the vehicle
• Faulty pressure sensor
• Damaged wiring or connectors
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the pressure sensor for proper operation.
• Replace the faulty pressure sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regularly inspect wiring and connectors.
• Ensure proper maintenance of fuel system components.
• Avoid overfilling the fuel tank.
Sensor Issue
• Avoid driving long distances until the issue is fixed.
• Consult with a professional mechanic for accurate diagnosis.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
This code has become more common with the increased use of alternative fuel vehicles, highlighting the importance of maintaining sensor accuracy.
Moderate – While not immediately critical, it should be addressed to prevent further issues.
Driving with a malfunctioning fuel pressure sensor may lead to inefficient fuel use and increased emissions, which could violate emissions regulations.
• Vehicle at operating temperature
• Stable fuel level in the tank
The pressure sensor is typically located near the alternative fuel tank, often mounted on or near the tank itself.
Q: Can I drive with a P019E code?
A: It's possible, but not recommended as it can lead to poor fuel efficiency and potential engine issues.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections of the fuel system can help prevent this code.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
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.
View on Amazon
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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.