Cruze

DTC P0096, P0097, or P0098

The intake air temperature (IAT) sensor 2 is integrated with the intake manifold pressure sensor. The IAT sensor 2 is a variable resistor that measures the temperature of the air after the charge air cooler in the intake manifold. The engine control module (ECM) supplies 5 V to the IAT sensor 2 signal circuit and a ground for the low reference circuit.

P0096 00 or P0097 00

P0098 00

P0097 00

The ECM detects that the IAT sensor 2 is warmer than 140°C (284°F) for greater than 15 s at idle.

P0098 00

The ECM detects that the IAT sensor 2 is colder than -39°C (-38°F) for more than 15 s at idle.

DTC P0096 00, P0097 00, P0098 00 are Type D DTCs.

DTC P0096 00, P0097 00, P0098 00 are Type D DTCs.

Depending on the output from the intake manifold pressure, an IAT sensor 2 signal circuit that is shorted to the intake manifold pressure sensor signal circuit may cause the IAT Sensor 2 parameter response to be erratic or become stuck at a given value.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. If the ignition has been OFF for 8 h or greater, the B75B Mass Air Flow/Intake Air Temperature Sensor (IAT 1), the B65 Intake Manifold Pressure and Air Temperature Sensor (IAT 2), and the B34 Engine Coolant Temperature Sensor should be within 9°C (16°F) of each other. Ignition ON, observe the scan tool IAT Sensor, IAT Sensor 2 and the ECT Sensor parameters. Compare those sensor parameters to each other to determine if the condition is current.
2. Engine running, observe the scan tool IAT Sensor 2 parameter. The reading should be between -39 to +130°C (-38 to +266°F) depending on the current ambient temperature and the vehicle operating conditions.
3. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Verify that debris is not blocking the airflow through the charge air cooler.
2. Ignition OFF for 90 s, disconnect the harness connector at the B65 Intake Manifold Pressure and Air Temperature Sensor.
3. Test for less than 5 Ω between the low reference circuit terminal 1 and ground.

⇒	If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

4. Ignition ON, verify the scan tool IAT Sensor 2 parameter is colder than -39°C (-38°F).

⇒	If warmer than the specified range, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.

5. Install a 3 A fused jumper wire between the signal circuit terminal 2 and ground. Verify the scan tool IAT Sensor 2 parameter is warmer than 130°C (266°F).

⇒	If less than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal replace the K20 Engine Control Module.

6. If the circuits test normal, test or replace the B65 Intake Manifold Pressure and Air Temperature Sensor.

Static Test

Measure and record the resistance of the B65 Intake Manifold Pressure and Air Temperature Sensor (IAT 2) at various ambient temperatures, then compare those measurements to the Temperature Versus Resistance .

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.