Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the electric part that controls how much hydrogen goes into the engine in cylinder 3. It's like when a light switch gets stuck and the light stays on.
The Engine Control Module (ECM) has detected a high voltage in the circuit that controls the injector for cylinder 3, which is responsible for injecting hydrogen fuel.
The P317F code indicates that the ECM has detected a high voltage condition in the low side circuit of the hydrogen injector for cylinder 3. This could be due to a short to voltage, a malfunctioning injector, or a wiring issue.
• Check Engine Light is on
• Poor engine performance
• Increased emissions
• Faulty hydrogen injector
• Short circuit in the wiring
• Faulty ECM
ECM: Engine Control Module
Injector: A device that introduces fuel into the engine
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for cylinder 3 injector.
• Test the injector for proper operation.
• Replace or repair the faulty injector.
• Repair any damaged wiring or connectors.
• Replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Toyota Mirai
• Hyundai Nexo
• Honda Clarity Fuel Cell
• Regular maintenance checks
• Ensure proper fuel quality
• Inspect wiring periodically
Engine Performance
• Do not ignore the check engine light.
• Have your vehicle inspected by a professional.
• Avoid driving until the issue is resolved to prevent further damage.
Check with the manufacturer for warranty coverage on emissions-related components.
This code has become more common with the introduction of hydrogen fuel cell vehicles.
High – This issue can lead to engine performance problems and should be addressed promptly.
Driving with this code may not comply with emissions regulations and can be unsafe.
• Vehicle at operating temperature
• Engine running
The hydrogen injector for cylinder 3 is located on the engine block, typically near the intake manifold.
Q: Can I drive my car with a P317F code?
A: It's not recommended to drive with this code as it can cause engine performance issues.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to poor engine performance and potential damage to the engine.
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