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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What Are the Symptoms of P2182?
- Check Engine Light on
- Coolant temperature reading inaccurate
- Engine management uses default temperature
- Fan may run at wrong time
- Heater operation affected
What Causes P2182? (Most Likely First)
- 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
Can I Still Drive with P2182?
Short distances only. P2182 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
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.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P2182?
-
Read CTS 2 data on scan tool and compare to CTS 1
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Inspect CTS 2 wiring and connector
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Measure CTS 2 resistance at current temperature
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Replace CTS 2 if readings differ significantly from CTS 1
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Which Vehicles Commonly Get P2182?
- 2010-2020 Toyota Camry 2.5L
- 2012-2019 Honda Civic 2.0L
- 2008-2018 Ford F-150 5.0L
- 2011-2019 Hyundai Sonata 2.4L
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