TorqueMech Beta
TorqueMech OBD Code Guide

P0115 - Engine Coolant Temperature Circuit Malfunction

Problem detected in ECT sensor circuit.

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Code Meaning

Problem detected in ECT sensor circuit.

Common Causes

ECT sensor failed
Wiring/connectors issue
Low coolant/air pockets (can skew readings)

Quick Checks

  • Compare ECT to ambient when cold
  • Inspect connector for coolant intrusion
  • Bleed cooling system if needed

Likely Repairs

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

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Related Codes

P0117
Engine Coolant Temperature Circuit Low Input
Open ->
P0118
Engine Coolant Temperature Circuit High 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.

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