P0196–ENGINE OIL TEMPERATURE SENSOR CIRCUIT PERFORMANCE

For a complete wiring diagram Refer to Section 8W.

When Monitored:
Engine off time is greater than 480 minutes. Ambient temperature is greater than 4°C (38° F).
Set Condition:
The PCM detects the Engine Oil Temp value is incorrect by comparing it with the other engine inputs. One Trip fault. Three good trips to turn off the MIL.

Possible Causes

(G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

(G224) ENGINE OIL TEMP SIGNAL CIRCUIT OPEN

(K900) SENSOR GROUND CIRCUIT OPEN

(G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO GROUND

(G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND

ENGINE OIL TEMPERATURE SENSOR

PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

Diagnostic Test

1.ACTIVE DTC

Is the DTC Active at this time?

Yes

Go To 2

Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

2. ENGINE OIL TEMP SIGNAL CIRCUIT

Is the voltage between 4.8 to 5.2 volts?

Yes

Go To 3

Go To 4

3.ENGINE OIL TEMPERATURE SENSOR

Is the voltage below 1.0 volt with the jumper wire installed?

Yes

Replace the Engine Oil Temperature Sensor.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 8

4.(G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

NOTE: Visually inspect both the component and the PCM connectors. Look for damaged, partially broken wires, and backed out or corroded terminals.

Is voltage present?

Yes

Repair the short to battery voltage in the (G224) Engine Oil Temp Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 5

5.(G224) ENGINE OIL TEMP SIGNAL CIRCUIT OPEN

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Is the resistance below 5.0 ohms?

Yes

Go To 6

Repair the open in the (G224) Engine Oil Temp Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

6.(G224) ENGINE OIL TEMP SIGNAL CIRCUIT SHORTED TO GROUND

Is the resistance below 100 ohms?

Yes

Repair the short to ground in the (G224) Engine Oil Temp Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 7

7.(G224) ENGINE OIL TEMP SIGNAL SHORTED TO THE (K900) SENSOR GROUND

Is the resistance below 5.0 ohms?

Yes

Repair the short between the (K900) Sensor ground and the (G224) Engine Oil Temp Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 9

8.(K900) SENSOR GROUND CIRCUIT OPEN

Is the resistance below 5.0 ohms?

Yes

Go To 9

Repair the open in the (K900) Sensor ground circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

9.PCM

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Were there any problems found?

Yes

Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)