Injector Circuit/Open - Cylinder 2
Problem with the injection system for cylinder 2.
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 computer isn't getting the signal it needs to open the fuel injector for cylinder 2, so it's not getting fuel when it should. This can cause the engine to run rough or even not start at all.
What the computer is actually seeing
The PCM sees no voltage or abnormal resistance at the injector control circuit for cylinder 2 when it tries to activate it.
What a healthy reading looks like
The injector should show around 12 volts when activated, and the resistance of the injector should be about 12-16 ohms.
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.
- 11. Check the wiring and connectors to injector 2 for any visible damage or corrosion. Is everything intact? (Yes - go to step 3, No - repair wiring/connector)
- 22. Measure the voltage at the injector connector while cranking the engine. Are you getting around 12 volts? (Yes - go to step 4, No - go to step 3)
- 33. Repair any damaged wiring or connections found. Clear code and retest. Is the code back? (Yes - replace injector, No - resolved)
- 44. Check the resistance of the injector. Is it within 12-16 ohms? (Yes - suspect PCM issue, No - replace injector)
Common causes
- Open circuit in wiring to injector
- Faulty injector
- Bad injector driver in PCM
- Corroded or damaged connector
- Short circuit to ground or power
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's not recommended to drive as it can cause engine misfires and lead to further damage.
Will this code come back after clearing it?
If the underlying issue isn't fixed, then yes, it will likely return.
Why does this code only affect cylinder 2?
Each cylinder has its own injector circuit, so a fault in just one circuit will only trip the code for that specific cylinder.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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