Active Shutoff Switch
The active shutoff switch has an issue.
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 active shutoff switch is supposed to control fuel delivery, and if it’s not working right, the engine can’t run properly.
What the computer is actually seeing
The engine control module (ECM) detects an out-of-range signal from the active shutoff switch, usually indicating it’s stuck open or closed when it shouldn’t be.
What a healthy reading looks like
The active shutoff switch should show a voltage signal between 0V (off) and 5V (on) based on its position; anything outside these values triggers the fault.
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 wiring and connectors for damage or corrosion; repair or replace as necessary.
- 2Measure voltage at the active shutoff switch; should read between 0V and 5V. If not, wiring could be bad.
- 3Test the active shutoff switch; remove it and apply direct voltage to see if it operates as expected. If it fails, replace it.
- 4Inspect the ECM for faults; ensure it’s receiving the correct signal from the switch. Replace if faulty.
Common causes
- Faulty active shutoff switch
- Wiring damage or short in the circuit
- Poor connections at the switch or ECM connectors
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity means you should avoid driving until fixed, as it can lead to engine stalling.
Will this code come back after clearing?
If the underlying issue isn't resolved, yes, it will reappear.
Why does this code accompany other SPNs?
It often pairs with other faults in the engine management system, particularly those related to fuel delivery.
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