P1116 — Engine Coolant Temperature Sensor Out of Self-Test Range
CAUTIONIs it safe to drive? Drive gently and get it looked at soon — it can worsen or fail inspection.
What P1116 means
This is a manufacturer-specific code — its meaning depends on the vehicle’s make (see below).
What P1116 means on specific makes
Ford / Lincoln CAUTION
The ECT sensor reading is outside the range Ford's self-test expects. Causes inaccurate temp readings that can affect fueling, fans, and cause hard starts or poor economy.
- Failed ECT sensor ($20-80)
- Low coolant level ($10-50)
- Stuck-open thermostat (never reaches temp) ($20-80)
- Wiring fault ($20-100)
Check first: Compare ECT live data against a known-good temp; top off coolant; test the thermostat.
Source: TroubleCodes.net Ford list