P0112

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE.

P0112

Fault symptoms

CHECK ENGINE.

On-Board Diagnostics

Type of diagnosis:

-	Continuous. However, it is interrupted once the fault criteria have been fulfilled and does not restart until the next driving cycle.

Enable criteria: (Conditions that must be fulfilled for diagnostics to be performed.)

-	Engine running.

Fault criteria: (When enable criteria have been fulfilled, diagnostics will check if the fault criteria have been fulfilled.)

-	Voltage lower than 0.125 V for more than 1 s.

Dependents: (Once fault criteria have been fulfilled, a number of other diagnostics must report OK before the diagnostic trouble code can finally be generated.)

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None.

System reaction to a fault: (Once the fault criteria have been fulfilled, certain measures will sometimes be taken.)

-	Substitute value is set to 40 °C.

OK report: (This diagnosis may be included as a dependent to another diagnosis and must therefore report OK even if it is continuous. The OK report is also used in fault handling to count down the fault counter.)

-	60 s. has passed since start. Fault criteria for P0112 or P0113 not fulfilled.

Fault handling: (Refer to section “Fault diagnosis, general” for more information.)

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Type III.

Diagnostic help

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

Diagnostic tool functions related to this fault:

•	Temperature sensor reading, unit °C.

Refer also to the description of readings under ”Fault diagnosis, general” for more information

Check the wiring

Jiggle the wiring harness at several points and in different directions to check if there are intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic instrument during the test.