Powertrain, generic · Fuel and air metering (injector circuit)

P0200 Injector Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0200 is the injector circuit fault without a cylinder assignment. The large US manufacturers do not use it – GM and Ford report injector faults per cylinder (P0201 ff) or as faults of the shared injector supply (P062D/P062E, P2146 ff). Saab documents it on the 3.0 V6 diesel of the 9-5, whose injectors are driven by a separate power stage behind the glovebox: there P0200 means an electrical fault in that power stage or its wiring, and the engine is shut down. Generally the cause lies in something all injectors share – supply, fuse, relay, ground or driver stage – so several cylinders are affected at once. CARB does not require separate codes for each kind of circuit fault.

Likely causes

Shared injector supply open (fuse, relay, harness connector)
Separate injector power stage or its wiring faulty (diesel)
Driver stage in the engine module faulty
Ground fault of the module or power stage

Symptoms

  • Check engine light on
  • Engine does not start or shuts down
  • Severe misfire on several cylinders
  • Limp mode, loss of power

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–900
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fuel injectorsinjector driver moduleinjector supply circuit

Related codes

P0201P062DP062EP2146P0216P0300

References: law.cornell.edu, saabwisonline.com.