P0200: Fault in an injector circuit, cylinder not identified

Injector circuit malfunction

Severity: Inspect soon

TroubleCodes.net lists misfire, stalling and no-start among the symptoms of injector circuit faults, so the engine may run poorly.

It gets more serious if:

Stop: Stop driving if the check engine light flashes, the engine misfires hard or stalls, because TroubleCodes.net lists misfire and stalling as symptoms.

Source: how we rate severity

P0200 in short

P0200 means the engine computer found a fault in one of the fuel injector circuits. Causes include a failed injector, a wiring fault or an injector driver problem in the computer. Misfire and stalling are possible, so get it checked soon.

The computer switches each fuel injector and watches the circuit. P0200 is the general code: it does not name which injector is at fault.

TroubleCodes.net lists failed injectors, injector circuit faults, wiring issues and the injector driver in the computer as causes. Cylinder-specific codes P0201 to P0214 narrow it down.

The Delaware DMV generic code list gives the same title, injector circuit malfunction.

Most likely causes

These are general causes for this code across vehicles. None is specific to one make or model.

Cause 1: Failed fuel injector
Common general cause
Why it ranks here
TroubleCodes.net lists failed injectors first.
What would change this
Rises if injector resistance is out of spec or an injector balance test fails. Falls if it tests normally.
How to test the fuel injector
Cause 2: Fault in the injector circuit wiring
Common general cause
Why it ranks here
TroubleCodes.net lists circuit and wiring faults.
What would change this
Rises if the connector or harness is damaged. Falls if wiring tests clean.
Cause 3: Injector driver fault in the computer
Possible — needs testing
Why it ranks here
TroubleCodes.net lists a computer injector driver problem.
What would change this
Rises if the injector and wiring test fine but the circuit is not switched. Falls if the circuit switches normally.
How to test the engine control module (ecm / pcm)

What to test first

Start at step 1. Each result tells you what it means and where to go next.

Step 1: Read all codes and note any misfire codes stored with P0200.
Low riskTool: OBD-II scan tool
- IfMisfire codes are stored
  It meansThe injector may not be firing.
  Go to step 2
- IfP0200 only
  It meansTest the injector circuit.
  Go to step 2
Step 2: Have the injector connector, power feed, ground switching, coil resistance and pulse tested (noid light or oscilloscope).
Best left to a shopTool: multimeter, noid light
Warning:Injectors are under fuel pressure and sit near hot parts. Let a shop do it.
- IfInjector out of spec or no pulse with good wiring
  It meansInjector fault.
  Points to: Failed fuel injector
- IfDamaged wiring or connector
  It meansWiring fault.
  Points to: Fault in the injector circuit wiring
- IfInjector and wiring good but no switching
  It meansCheck the computer driver.
  Points to: Injector driver fault in the computer

Symptoms

Check engine light
Misfire or rough running
Stalling or hard starting Gets more serious: stop and have it checked.

How to fix

Parts and cost context

Fuel injector:Confirm with injector tests before replacing. Labour varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Chevrolet

2010 · Camaro
Supported by vehicle data
NHTSA bulletin summary for this model: covers a check engine light or misfire with injector codes P0200-P0208 or misfire codes P0300-P0308. Whether it is still current is not verified.

PIP-4673Status unverified
Check engine light or misfire with injector codes P0200-P0208 or misfire codes P0300-P0308
2010camaro · issued December 1, 2010 · NHTSA 10032392
Service engine soon light and/or misfire with injector circuit codes P0200-P0208 and/or misfire codes P0300-P0308; the summary says it was updated 6/6/11. Only the NHTSA flat-file summary was read, not the bulletin itself.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

All Fuel pump and injectors codes

Sources and review

P0200 trouble code explanation — TroubleCodes.net
P0200: NHTSA bulletin 10032392 (Check engine light or misfire with injector codes P0200-P0208 or misfire codes P0300-P0308) — Manufacturer communication via NHTSA flat file
On-Board Diagnostic Trouble Codes (generic code title list) — Delaware Division of Motor Vehicles

Last reviewed: October 16, 2026
Written by: Saurabh K.
Editorial review: Pending
Technician review: Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

Severity: Inspect soon

Most likely causes

Cause 1: Failed fuel injector

Cause 2: Fault in the injector circuit wiring

Cause 3: Injector driver fault in the computer

What to test first

Step 1: Read all codes and note any misfire codes stored with P0200.

Step 2: Have the injector connector, power feed, ground switching, coil resistance and pulse tested (noid light or oscilloscope).