P0201 Injector #1 Control Circuit

SYMPTOM
P-0201 INJECTOR #1 CONTROL CIRCUIT

WHEN MONITORED
With battery voltage greater than 10.4 volts, the auto shutdown relay energized, injector pulse width less than 10 ms, 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 0.18 ms after injector turn off, and with no other injectors on.

POSSIBLE CAUSES
- No possible causes remaining
- Auto shutdown relay output circuit open
- Injector #1 defective
- Inj control ckt wiring harness intermittent defect
- Inj control ckt wiring harness observable defect
- Injector #1 driver circuit open
- Injector #1 driver circuit shorted to ground
- Powertrain control module defective