P2183: Engine Coolant Temperature Sensor 2 Circuit Range/Performance

P2183 means sensor 2 delivers a voltage inside the valid band, yet the temperature does not fit the other readings. Most makers test this after a long cold soak, when all temperatures should match. The VW Touareg with engine CNRB sets it when the radiator outlet sensor differs by more than 35 K from intake air, ambient or fuel temperature at start-up. RAM 1500 models with the rear axle heater compare that loop with engine coolant and oil after 8 hours and allow 30 °C; a block heater can trip it falsely. Ford reflashes Escape and Corsair plug-in hybrids where an active cabin heater soak timer set P2183 wrongly. Mazda3 sensors at the radiator bottom let water in and read too low. Real causes are corrosion and drift; others need a software update. Low, high and erratic signals are P2184 to P2186.

Symptoms

• Check engine light, often right after a cold start
• Remote start disabled on some trucks
• Engine overheat message without real overheating on some hybrids

Most likely causes

• Water ingress or internal corrosion in sensor 2 shifting its reading
• Control software misjudging soak time, block heater or cabin heater use
• Coolant hoses at the sensor loop swapped or air trapped after service
• Aged sensor element drifting out of tolerance

What to check, in order

Start with the simplest. You can tick off each step.

1. With the engine cold, check the coolant level; never do this when the system is hot
2. Compare the reading with other engine data while varying the engine speed.
3. Check the actual temperature in live data
4. Make sure the fan comes on when it should
5. Check the thermostat and connector
6. Measure the sensor and replace it if its readings do not make sense

Good to know

• Repair difficulty: easy
• It affects emissions.

What each character of P2183 means

• P: Powertrain: engine and transmission
• 2: Generic code: same on every make
• 1: Air and fuel
• 83: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2183?

Watch the temperature gauge. If it climbs or a warning appears, stop the car in a safe place and turn off the engine: overheating can cause serious damage.

What causes code P2183?

The most common causes are: water ingress or internal corrosion in sensor 2 shifting its reading; control software misjudging soak time, block heater or cabin heater use; coolant hoses at the sensor loop swapped or air trapped after service.

Related codes

• P2182Engine Coolant Temperature Sensor 2 Circuit
• P2184Engine Coolant Temperature Sensor 2 Circuit Low
• P2185Engine Coolant Temperature Sensor 2 Circuit High
• P2186Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic
• P0116Engine Coolant Temperature Sensor 1 Circuit Range/Performance
• P01E4Engine Coolant Temperature Sensor 3 Circuit Range/Performance
• P26C1Engine Coolant Bypass Valve D Range/Performance

Sources

• law.cornell.edu: 13 CCR 1968.2
• static.nhtsa.gov: MC 10074008 2280
• static.nhtsa.gov: MC 10214559 9999
• static.nhtsa.gov: MC 10118462 9999

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.