AutoCodes – Generic – P1466

P1466 Code - A/C Refrigerant Temperature Sensor/Circuit Malfunction

Quick Answer

P1466 indicates A/C Refrigerant Temperature Sensor/Circuit Malfunction. Common causes include Faulty A/C Refrigerant Temperature Sensor, A/C Refrigerant Temperature Sensor harness is open or shorted, A/C Refrigerant Temperature Sensor circuit poor electrical connection. 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: P1466 indicates A/C Refrigerant Temperature Sensor/Circuit Malfunction.
Common causes: Common causes include Faulty A/C Refrigerant Temperature Sensor, A/C Refrigerant Temperature Sensor harness is open or shorted, A/C Refrigerant Temperature Sensor circuit poor electrical connection.
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 11,237

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P1466 Description

OBDII Code P1466 - A/C Refrigerant Temperature Sensor/Circuit Malfunction - AutoCodes.com — P1466 Code - A/C Refrigerant Temperature Sensor/Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1466?

Faulty A/C Refrigerant Temperature Sensor
A/C Refrigerant Temperature Sensor harness is open or shorted
A/C Refrigerant Temperature Sensor circuit poor electrical connection

How to Fix the DTC P1466?

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 P1466 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.

Need more information about the P1466 code?

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Information for Specific Makes

P1466 Audi — Additive Pump Open/Short to Ground
P1466 BMW — Heated Catalyst Power Switch Temperature Sensor Plausibility
P1466 Ford — A/C Refrigerant Temperature Sensor/Circuit Malfunction
P1466 Lincoln — A/C Refrigerant Temperature Sensor/Circuit Malfunction
P1466 Mercury — A/C Refrigerant Temperature Sensor/Circuit Malfunction
P1466 MINI — Heated Catalyst Power Switch Temperature Sensor Plausibility
P1466 Volkswagen — Additive Pump Open/Short to Ground

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.