AutoCodesAudi – P1290 Audi

P1290 Audi Code - Engine Coolant Temperature Sensor High Input

Quick Answer

P1290 Audi indicates Engine Coolant Temperature Sensor High Input. Common causes include Faulty Engine Coolant Temperature Sensor, Engine Coolant Temperature Sensor harness is open or shorted, Engine Coolant 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
P1290 Audi indicates Engine Coolant Temperature Sensor High Input.
Common causes
Common causes include Faulty Engine Coolant Temperature Sensor, Engine Coolant Temperature Sensor harness is open or shorted, Engine Coolant 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 10,601
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 07, 2019
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Code P1290 Audi Description

OBDII Code P1290 Audi - Engine Coolant Temperature Sensor High Input - AutoCodes.com
P1290 Audi Code - Engine Coolant Temperature Sensor High Input

What are the Possible Causes of the DTC P1290 Audi?

  • Faulty Engine Coolant Temperature Sensor
  • Engine Coolant Temperature Sensor harness is open or shorted
  • Engine Coolant Temperature Sensor circuit poor electrical connection

How to Fix the DTC P1290 Audi?

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 P1290 Audi 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.

Frequently Asked Questions about P1290 Audi Code

1. What does the OBDII code P1290 mean on an Audi?

P1290 indicates a high input signal from the engine coolant temperature sensor, suggesting an abnormal reading or electrical issue.

2. What are the common symptoms of the P1290 code on an Audi?

Symptoms may include engine overheating, poor fuel efficiency, difficulty starting, and the Check Engine Light being illuminated.

3. What causes the P1290 code on an Audi?

Common causes include a faulty engine coolant temperature sensor, damaged wiring or connectors, or issues with the vehicle’s PCM (Powertrain Control Module).

4. Can I drive my Audi with the P1290 code?

Driving with this code is not recommended as it may lead to engine overheating or other performance issues.

5. How do I troubleshoot the P1290 code on my Audi?

Start by inspecting the engine coolant temperature sensor and its wiring for damage, corrosion, or disconnections, and use a multimeter to test sensor functionality.

6. How do you fix the P1290 code on an Audi?

Repairs may involve replacing the engine coolant temperature sensor, repairing damaged wiring, or updating/reprogramming the PCM.

7. Can low coolant levels cause the P1290 code?

Low coolant levels can affect engine temperature but are not typically the direct cause of the P1290 code.

8. How much does it cost to fix the P1290 code on an Audi?

Costs vary depending on the issue but generally range from $50 to $150 for sensor replacement or more for wiring or PCM repairs.

9. Could a faulty thermostat trigger the P1290 code?

Yes, a malfunctioning thermostat can cause abnormal temperature readings, potentially contributing to the P1290 code.

10. How can I prevent the P1290 code from occurring on my Audi?

Regular maintenance, including checking coolant levels and inspecting sensors and wiring, can help prevent the P1290 code from occurring.

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