P1272

Read the instructions below then start the fault diagnostic procedure.

Symptom: None.

P1272

Fault symptoms

•

None.

On-Board Diagnostics

Type of diagnosis:

-	On time/driving cycle

Enable criteria:

-	Ignition ON.

Fault criteria:

-	When the signal on the input exceeds 4.8 V.

Dependents:

-

None.

System reaction to a fault:

-	The control module will continue to work with a substitute value.

OK report:

-	When the signal on the input falls below 4.8 V.

Fault handling: (See section Fault handling III, other emissions-related components and functions for more information)

-

Type III.

Diagnostic help

Fault diagnosis concerns an electrical fault in connecting leads or in the sensor.

Functions in the diagnostic tool related to the fault:

-	Read value: Injector correction resistor 4

See also description of read value under "Read Values" menu for more information.

Checking the wiring

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.