P0200 Injector circuit / open
What P0200 means
The engine computer has detected an electrical fault in the fuel injector circuits but has not pinned it to a single cylinder. This often points to a shared part of the circuit, such as the injector power supply, a common connector or the computer's injector drivers. One or more cylinders may not be getting fuel.
P0200 is a generic SAE J2012 code: it means the same on every make. The exact cause still depends on the car, so read the freeze-frame data before replacing parts.
At a glance
- Severity
- Medium
- Typical repair cost
- 80–450 €
- Workshop time
- 0.5–4 h
- Repair difficulty
- Medium
- DIY possible
- Yes
- Check engine light
- Yes
- Affects emissions test
- Yes
- Limp mode possible
- Yes
Parts and labour at an independent workshop in Europe. Main dealers charge more; the cause decides the bill, not the code.
Symptoms
- Check engine light on
- Misfires and rough running
- Hard starting or stalling
- Reduced power or limp mode
Common causes
- Open or damaged wiring in the injector harness or a common connector
- Blown fuse or faulty relay supplying the injectors
- Failed injector coil (open or shorted)
- On common-rail diesels, a fault in the injector supply or power stage
- Engine control unit injector driver fault
Can I keep driving with P0200?
You can usually drive to a workshop, but have it checked within one to two weeks and sooner if the engine misfires. If the check engine light flashes, stop: unburned fuel can overheat the catalytic converter.
What to check first
- Read all stored codes: cylinder-specific injector or misfire codes show where to look.
- Check the injector fuse and relay, and inspect the main injector harness connector for corrosion or damage.
- Measure each injector's coil resistance and compare them with each other and with the specification.
- Check injector supply voltage and the control pulse with a test light or oscilloscope before suspecting the engine control unit.
Related codes
- P0201 Cylinder 1 injector A circuit
- P0202 Cylinder 2 injector A circuit
- P0203 Cylinder 3 injector A circuit
- P0204 Cylinder 4 injector A circuit
- P0205 Cylinder 5 injector A circuit
- P0206 Cylinder 6 injector A circuit
- P0215 Engine shutoff solenoid malfunction
- P0216 Injection timing control circuit
Data: TORKO fault-code catalogue, built on OBDex (CC0-1.0) and reviewed against workshop practice. Informational only — it does not replace a diagnosis by a mechanic.
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