Power Take-off (PTO) Fuel Flow Rate
Indicates an issue with the fuel flow rate to the Power Take-off system.
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 computer tracks the fuel being sent to the PTO and flags a problem when it’s not getting the right amount or flow isn’t as expected.
What the computer is actually seeing
The engine control unit (ECU) expects a specific fuel flow rate signal, typically between 1 to 15 liters per minute, depending on the application and load.
What a healthy reading looks like
Normal flow rates should be between 5-10 L/min under typical PTO operation.
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 for any visible damage to fuel lines and connectors, repair if found.
- 2Inspect the fuel flow sensor for corrosion or damage, replace if necessary.
- 3Confirm that the fuel tank has sufficient fuel; low levels can affect flow rate measurements.
- 4Use a scan tool to read current fuel flow rate. It should match expected values under load conditions.
- 5If flow rates are outside of normal, check for injector issues or perform a fuel pressure test.
Common causes
- Clogged or damaged fuel lines
- Faulty fuel flow sensor
- Bad connections or wiring to the PTO system
- Injector issues affecting fuel delivery
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's safe to drive short distances, but fix it soon to prevent further complications.
Will this code come back after clearing it?
It might return if the underlying issue isn't repaired.
Why does this code appear with other SPN codes?
Interrelated systems in the diesel engine may affect the PTO and report multiple issues together.
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