Engine Coolant Temperature Sensor 2 Circuit
The P2182 code means the vehicle's onboard diagnostic system has detected: Engine Coolant Temperature Sensor 2 Circuit. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- easy
- Estimated cost
- $50 - $200 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Coolant temperature reading inaccurate
- Engine management uses default temperature
- Fan may run at wrong time
- Heater operation affected
Probable Causes (Ranked by Likelihood)
- Failed engine coolant temperature sensor 2 Very High
- Damaged wiring to CTS 2 High
- Corroded CTS 2 connector Moderate
- ECM CTS 2 input circuit fault Low
Step-by-Step Diagnostic Procedure
-
Read CTS 2 data on scan tool and compare to CTS 1
-
Inspect CTS 2 wiring and connector
-
Measure CTS 2 resistance at current temperature
-
Replace CTS 2 if readings differ significantly from CTS 1
Frequently Asked Questions
What does P2182 mean?
P2182 indicates: Engine Coolant Temperature Sensor 2 Circuit. The ECM has identified an abnormal condition that needs attention.
Can I drive with P2182?
Drive short distances only and schedule repair.
What is the most common fix?
The most common fix depends on the root cause. Start with basic checks like vacuum leaks, sensor conditions, and fluid levels before replacing components.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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