Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a system that checks for gas leaks. This code means that part of the system isn't getting enough power to work right.
The EVAP (Evaporative Emission Control) system prevents fuel vapors from escaping into the atmosphere. This code indicates a low voltage issue in the leak detection module circuit.
The P147E code is triggered when the Powertrain Control Module (PCM) detects a low voltage condition in the circuit that powers the EVAP system's leak detection module. This module is responsible for monitoring the integrity of the fuel system by checking for leaks.
• Check Engine Light is on
• Possible fuel smell
• Reduced fuel efficiency
• Faulty leak detection module
• Open or shorted wiring in the module circuit
• Bad electrical connection to the module
EVAP: Evaporative Emission Control System
PCM: Powertrain Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors of the leak detection module.
• Test the voltage supply to the module.
• Repair or replace damaged wiring or connectors.
• Replace the leak detection module if faulty.
• Ensure proper voltage supply to the module.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect EVAP system components.
• Ensure fuel cap is tightly sealed.
• Check for any visible fuel leaks.
Sensor Issue
• Have a mechanic inspect the vehicle if the Check Engine Light is on.
• Avoid overfilling the gas tank.
Check vehicle warranty for emissions-related components coverage.
This code has been associated with EVAP system issues in vehicles since the implementation of OBD-II standards.
Moderate – While not immediately dangerous, it can lead to increased emissions and reduced fuel efficiency.
Ignoring this issue may result in failing emissions tests and increased environmental pollution.
• Engine running
• System at operating temperature
The leak detection module is typically located near the fuel tank or along the EVAP system's vapor lines.
Q: Can I drive with a P147E code?
A: Yes, but it's recommended to fix it soon to avoid emissions issues and potential fuel smell.
Q: Will this code affect my vehicle's performance?
A: It may not affect performance directly, but it can reduce fuel efficiency and cause a fuel smell.
High-End · Full-system diagnostics
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Network faults often require full-system access instead of a generic code reader alone.
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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.