TorqueMech Beta
TorqueMech OBD Code Guide

P0118 - Engine Coolant Temperature Circuit High Input

ECT signal indicates very cold (open/high voltage).

Open Estimator Browse Diagnostics Browse Repair Guides

Code Meaning

ECT signal indicates very cold (open/high voltage).

Common Causes

Open circuit/unplugged sensor
ECT sensor failed

Quick Checks

  • Check connector seated
  • Inspect wiring for breaks
  • Check sensor resistance

Likely Repairs

Use test results to confirm the fault before pricing the repair.

Open Estimator

Related Codes

P0115
Engine Coolant Temperature Circuit Malfunction
Open ->
P0117
Engine Coolant Temperature Circuit Low Input
Open ->
P0128
Coolant Thermostat Below Regulating Temp
Open ->

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.

Estimate This Repair Diagnostic Guides Search Another Code