For 1990-2009 cars

# Information on Use of Correct Engine Coolant Heater Cord to Avoid Setting DTC P0116

Subject: | Information on Use of Correct Engine Coolant Heater Cord to Avoid Setting DTC P0116

Models: | 2006 Chevrolet Cobalt, HHR

| 2006 Pontiac Pursuit, G5 (Canada Only)

| 2006 Saturn ION

| All with 2.4L Engine (VIN P -- RPO LE5)

| 2007 Chevrolet Cobalt, HHR

| 2007 Pontiac G5

| 2007 Saturn ION

| All with 2.2L or 2.4L Engine (VINs D, P -- RPOs L61, LE5)

The OBDII diagnostics require a thermostatically controlled engine coolant heater cord that disables the coolant heater above a threshold temperature, approximately -18°C (0°F). Using a non-thermostatically controlled engine coolant heater cord above this threshold temperature may generate a DTC P0116.

#### Engine Coolant Heater Cord Plug Ends (Cobalts)

The figure above shows a non-thermostatically controlled plug (top) and a thermostatically controlled plug (bottom). The thermostatically controlled plug is larger and has a tag attached indicating that it operates below -18°C (0°F).

If any of the above-listed vehicles is found to have DTC P0116 set, the technician should verify that the correct engine coolant heater cord is installed. The thermostatically and non-thermostatically controlled engine coolant heater cords are interchangeable.

Refer to Coolant Heater Cord Replacement in SI.

### Parts Information

Part Number | Description | Usage
--- | --- | ---
15271946 | Cord Asm-Eng Cool Htr w/ thermistor | 2006 Cobalt/Pursuit/G5 with LE5 2007 Cobalt/G5 with LE5 and L61
15842269 | 2006 ION with LE5 2007 ION with LE5 and L61
15274940 | 2006 HHR with LE5 2007 HHR with LE5 and L61