P0204 Injector # 4 Control Circuit

SYMPTOM
P-0204 INJECTOR # 4 CONTROL CIRCUIT

WHEN MONITORED
With Battery voltage greater than 10.4 volts, the auto shutdown relay energized, injector pulse width less than 10ms, and engine speed less than 3000 rpm.

SET CONDITION
This trouble code takes 0.64 to 10.0 seconds to set when no inductive kick is sensed 0.18ms after injector turn off, and with no other injectors on.

POSSIBLE CAUSES
- ASD relay output circuit open
- Fuel injector defective
- INJ control ckt wiring harness intermittent defect
- INJ control ckt wiring harness observable defect
- Injector # 4 driver circuit open
- Injector # 4 driver circuit short to ground
- Powertrain control module defective