P1117 OBD Code Definition:
P1117 Engine Coolant Sensor intermittent/ECT Sensor Intermittent
P1117 OBD Code Description:

Possible Symptoms

• Malfunction Indicator Light (MIL) ON

Possible Causes

• Failed O2 sensor heater circuit
• Wiring Harness issue
• Failing ECM

Possible Solutions

• Inspect and test O2 sensor heater circuit as per repair manual
• Inspect and test wiring harness as per wiring diagram
• Replace ECM if O2 sensor and wiring harness are to factory design