Cylinder 2 Injector Performance Problem
This code indicates a performance issue with the second cylinder's fuel injector.
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 is not getting the expected fuel delivery from the second injector, suggesting it's either not working, getting clogged, or there's an electrical issue.
What the computer is actually seeing
The ECM monitors the current and voltage provided to the injector. If it sees a discrepancy in the expected pulse width or duty cycle of around 1-3ms for standard injectors, it triggers this code.
What a healthy reading looks like
Expected injector pulse width is usually 1-10ms, depending on RPM and load conditions. Voltage should be around 12-14V when active.
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 the wiring and connector to injector 2 for damage or corrosion. Repair or replace as needed.
- 2Test the fuel injector for cylinder 2 by measuring its resistance. It should be between 12-16 ohms. If out of range, replace the injector.
- 3Verify fuel pressure at the rail. It should be at least 50-60 PSI with the engine running. If low, investigate fuel pump or filter issues.
- 4Using a scan tool, check for additional codes related to fuel delivery or injector performance. Address any other issues noted.
- 5Perform a balance test on the injectors to check if cylinder 2 is underperforming compared to the others. If it fails, replace the injector.
Common causes
- Faulty fuel injector in cylinder 2
- Blocked fuel supply to the injector
- Wiring issue to the injector
- Defective engine control module (ECM)
- Low fuel pressure or clogged fuel filter
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
You can drive it but expect reduced performance and fuel efficiency. Fix soon to prevent further engine damage.
Will this code come back after clearing?
If the underlying issue isn't fixed, the code is likely to reappear.
Why does this code only affect cylinder 2?
This code points to a problem specifically with the injector or circuit for cylinder 2, unrelated to others unless they share a common issue.
Working a real vehicle right now?
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