Cylinder 1-Injector Circuit Open or Shorted to Ground

Test 1 - 3:

Test 4 - 7:

Test 8:

SYMPTOM
P0201 - CYLINDER 1 - INJECTOR CIRCUIT OPEN OR SHORTED TO GROUND

TEST NOTE
This symptom is diagnosed using the test P0201 - CYLINDER 1 - INJECTOR CIRCUIT EXCESSIVE CURRENT.

WHEN MONITORED
With the engine running.

SET CONDITION
The ECM detects an open or short to ground on the Cylinder #1 Injector circuit.

POSSIBLE CAUSES
- Checking ECM power and grounds
- Checking the engine control relay system
- Engine control module
- Intermittent condition
- Fuel injector control circuit shorted to voltage
- Fuel injector control circuit shorted to ground
- Fuel injector circuits shorted together
- Fuel injector control circuit open
- Fuel injector