PTO Switch Status
Indicates a problem with the Power Take-Off (PTO) switch status.
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 truck's computer is getting an incorrect signal from the PTO switch that controls the power take-off, which can affect how the engine powers equipment like hydraulic pumps.
What the computer is actually seeing
The vehicle's control module expects a signal that indicates the PTO switch is engaged or disengaged. If the expected signal (usually around 0-5 volts) is not received when expected, a fault is set.
What a healthy reading looks like
PTO switch should show 0 volts when off and close to 5 volts when engaged. Anything outside this range or a lack of change indicates a problem.
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.
- 1Verify PTO switch operation by manually checking it; expect it to switch between 0 and 5 volts.
- 2Inspect wiring and connectors from the PTO switch to the ECM for damage or corrosion; repair as needed.
- 3Check the resistance of the PTO switch when engaged; should be near zero ohms.
- 4If wiring and switch check out, consider testing the ECM for faults.
Common causes
- Faulty PTO switch
- Wiring issues between the PTO switch and ECM
- A malfunctioning engine control module (ECM)
- Poor connection in the PTO circuit
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It may still be drivable, but performance of PTO-related functions could be compromised.
Will this fault code come back after clearing?
If the underlying issue isn't fixed, it will typically return after a short drive.
Why does this code pair with other SPNs?
This code often comes up with other codes that indicate a broader issue with the PTO system.
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