Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that a switch that controls the spark plugs and fuel injectors didn't turn off when it was supposed to.
The P13E2 code indicates that the relay responsible for controlling the ignition system and fuel injectors did not deactivate as expected.
The ignition and injectors relay is supposed to de-energize when the engine is turned off or under certain conditions to prevent fuel and spark delivery. This code suggests the relay remained engaged, potentially leading to issues like battery drain or engine run-on.
• Engine continues to run after being turned off
• Battery drain
• Check engine light illuminated
• Faulty ignition and injectors relay
• Wiring issues or short circuits
• Faulty engine control module (ECM)
Relay: An electrical switch that opens and closes under the control of another electrical circuit.
ECM: Engine Control Module, the computer that controls the engine's operation.
• Inspect the ignition and injectors relay for faults.
• Check wiring and connections for damage or shorts.
• Test the ECM for proper functionality.
• Replace the faulty relay.
• Repair or replace damaged wiring.
• Reprogram or replace the ECM if necessary.
• Multimeter
• OBD-II scanner
• Relay puller tool
$100 - $300
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly check electrical connections.
• Ensure relays are functioning properly.
• Perform routine vehicle diagnostics.
Engine Performance
• Avoid leaving the vehicle running unnecessarily.
• Schedule regular maintenance checks.
Check your vehicle's warranty for coverage on electrical components.
This code has been associated with vehicles that have experienced electrical relay failures.
Moderate – Addressing this issue promptly can prevent further electrical problems.
Driving with this issue may lead to unexpected vehicle behavior. Ensure repairs are conducted by a certified technician.
• Engine off
• Engine running
The relay is typically located in the engine bay within the fuse box.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to battery drain or potential damage to the ignition system.
Q: Can I drive my car with this code?
A: It's not recommended as it may cause further electrical issues or unexpected engine behavior.
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.
Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
View options on Amazon
Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
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.