P0200

Injector Circuit/Open

Fuel injector circuit Generic OBD-II High

What it means

P0200 means the engine computer has detected an electrical fault — usually an open circuit — in a fuel injector's control wiring. If the injector can't fire, that cylinder gets no fuel, so the engine misfires, idles rough, and loses power. Because a dead cylinder dumps unburned fuel into the exhaust, this code should be fixed before the catalytic converter is damaged.

High

Can I keep driving? Drive as little as possible — an open injector circuit can kill a cylinder, causing a misfire that can overheat the catalytic converter.

Real-world scan data

Seen in

1,308

scans in the past year

Found in

0.2%

of scans

0.4%

of scans that found faults

Appears alongside · share of P0200 scans

P0380in 37.2% of scans

P0204in 36.6% of scans

P0202in 36.5% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on (may flash if a cylinder is dead)
Misfire, rough idle, or stalling
Reduced power and hesitation
Hard starting
Fuel smell or poor economy in some cases

Common causes

Most likely first

Open or damaged injector wiring or connectorLikely
Failed fuel injectorCommon
Loose or corroded electrical connectionCommon
Failed injector driver in the ECM (rare)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and any cylinder-specific injector codes to find the affected circuit.
Inspect the injector connector and wiring for opens, damage, or corrosion.
Measure the injector's resistance and compare it to spec.
Check for the injector control (driver) signal from the ECM.
Replace the faulty injector or repair the wiring; suspect the ECM last.

FAQ

Quick answers

Is it safe to drive with P0200?+

No — an open injector circuit can leave a cylinder dead, and the resulting raw fuel and misfire can quickly damage the catalytic converter. Repair it before extended driving.

Can I just clear P0200?+

It will return immediately if the injector or its wiring is still open, since the computer tests the circuit every time it runs.

Read & clear P0200 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX