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 computer in your car is having trouble with the part that helps inject fuel into the engine. It's like if your brain was having trouble telling your hand to pick up a toy.
The Engine Control Module (ECM) is detecting an issue with the high-pressure fuel injector system on Bank 1, which could affect how fuel is delivered to the engine.
The P31E6 code indicates that the ECM has identified an internal error related to the high-pressure injector system on Bank 1. This could involve issues with the injector control circuits, the ECM itself, or related sensors and actuators.
• Check Engine Light is on
• Poor engine performance
• Increased fuel consumption
• Faulty high-pressure fuel injector
• Wiring issues in the injector circuit
• Malfunctioning ECM
ECM: Engine Control Module, the computer that controls engine functions.
Bank 1: The side of the engine containing cylinder 1.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for the injectors.
• Test the high-pressure fuel injectors for proper operation.
• Replace faulty high-pressure fuel injector.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Injector tester
$200 - $1000
Moderate
• Toyota Prius
• Honda Insight
• Chevrolet Volt
• Regular maintenance of the fuel system
• Promptly addressing any Check Engine Light warnings
• Using quality fuel
Engine Performance
• Do not ignore the Check Engine Light.
• Have your vehicle inspected by a professional.
• Avoid driving the vehicle excessively until repaired.
Check with the manufacturer for possible coverage under the powertrain warranty.
This code has been associated with hybrid and fuel-efficient vehicles due to their complex fuel systems.
High – This issue can lead to poor engine performance and increased emissions.
Driving with this error may not comply with emissions regulations and could lead to further engine damage.
• Engine running
• Vehicle at operating temperature
The high-pressure fuel injectors are located on the engine, typically on the cylinder head for Bank 1.
Q: Can I drive with a P31E6 code?
A: It's not recommended as it can lead to poor performance and increased emissions.
Q: What happens if I ignore this code?
A: Ignoring the code can result in further engine damage and higher repair costs.
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