Fuel Injector Quantity Measurement Error
This code indicates a discrepancy in the expected fuel injector quantity.
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 expects a certain amount of fuel from the injectors but is seeing either too much or too little, which can affect performance and emissions.
What the computer is actually seeing
The fuel flow from the injector should match the quantity specified by the engine control module (ECM). If the measured amount deviates significantly from the expected amount, this code is triggered.
What a healthy reading looks like
Expected fuel quantity is typically between 0-100 mm³ per cycle depending on engine load and RPM.
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 other active codes; address those first.
- 2Inspect the fuel lines and connectors for leaks or damage; repair as needed.
- 3Check the fuel filter for clogs; replace if dirty.
- 4Test the fuel injector operation; verify it delivers the correct quantity under specified conditions, while monitoring pressure (ideally 2-5 bar).
- 5Review the live data for injector duration and fuel flow against specifications; any significant deviation indicates a faulty injector or ECM.
Common causes
- Faulty fuel injector
- Clogged fuel filter
- Leaking fuel lines
- Bad wiring or connectors to injectors
- ECM faults
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's advisable to limit driving; prolonged use can lead to excessive emissions or engine damage.
Will this code come back after clearing?
If the underlying issue isn't resolved, yes, the code will likely return.
Why does this code pair with others?
This code often accompanies other injector-related fault codes or general fuel system issues.
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