Engine Shutdown Relay Circuit
Problem with the engine shutdown relay circuit in the vehicle.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The engine shutdown relay controls whether the engine can run or not. If it fails, the computer can't allow the engine to start or stay running.
What the computer is actually seeing
The engine control module (ECM) expects to see a voltage reading of about 12V at the relay when the ignition is on. If it drops below 10V, the computer may set this code.
What a healthy reading looks like
Relay voltage should be between 11V and 15V during operation; the command from the ECM to the relay should be active when the engine is running.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check battery voltage; it should be 12V or more. If not, charge/replace battery.
- 2Inspect the wiring and connector to the engine shutdown relay for damage or corrosion. Repair as necessary.
- 3Test the engine shutdown relay by applying direct 12V to the coil and checking if it closes the switch. If it doesn't, replace the relay.
- 4Check the signal from the ECM to the relay; measure the voltage at the relay terminal with the ignition on. It should be close to battery voltage when activated.
Common causes
- Faulty engine shutdown relay
- Corroded or damaged wiring
- Failed ECM
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
No, it's not safe to drive with this code active. The engine may not start or may shut off unexpectedly.
Will this code come back after clearing?
If the underlying issue isn't fixed, the code will return after the next drive cycle.
Why does it pair with SPN 614?
SPN 614 relates to the engine stop functionality, which is directly tied to the engine shutdown relay operations.
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