AutoCodes – Chrysler – P2181 Chrysler

P2181 Chrysler Code - Cooling System Performance

Quick Answer

The Engine Control Module monitors the Engine Coolant Temperature Sensor signal to determine the engine temperature. Common causes include Low coolant level, Faulty Engine Coolant Temperature Sensor, Stuck or leaking thermostat. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2181 Chrysler indicates Cooling System Performance.
Common causes: Common causes include Low coolant level, Faulty Engine Coolant Temperature Sensor, Stuck or leaking thermostat.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 38,777

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 13, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P2181 Chrysler Description

The Engine Control Module monitors the Engine Coolant Temperature Sensor signal to determine the engine temperature. the ECM sets the OBDII code when the Engine Coolant Temperature Sensor signal is out of factory specifications.

OBDII Code P2181 Chrysler - Cooling System Performance - AutoCodes.com — P2181 Chrysler Code - Cooling System Performance

What does this mean?

What are the Possible Causes of the DTC P2181 Chrysler?

Low coolant level
Faulty Engine Coolant Temperature Sensor
Stuck or leaking thermostat
Engine Coolant Temperature Sensor harness is open or shorted
Engine Coolant Temperature Sensor circuit poor electrical connection

How to Fix the DTC P2181 Chrysler?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2181 Chrysler code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.