AutoCodes – Cadillac – P2085 Cadillac

P2085 Cadillac Code - Exhaust Gas Temperature Sensor 2 Circuit Intermittent

Quick Answer

The Exhaust Gas Temperature Sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Common causes include Exhaust leaks, Faulty Exhaust Gas Temperature Sensor (EGTS) 2, Exhaust Gas Temperature Sensor 2 harness is open or shorted. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P2085 Cadillac indicates Exhaust Gas Temperature Sensor 2 Circuit Intermittent.
Common causes: Common causes include Exhaust leaks, Faulty Exhaust Gas Temperature Sensor (EGTS) 2, Exhaust Gas Temperature Sensor 2 harness is open or shorted.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 316

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2085 Cadillac Description

The Exhaust Gas Temperature Sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. The exhaust temperature sensor 1 is the first exhaust temperature sensor on the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The Engine Control Module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The Exhaust Gas Temperature Sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the Exhaust Gas Temperature Sensor resistance has changed greater than a calibrated amount in less than 1 s.

OBDII Code P2085 Cadillac - Exhaust Gas Temperature Sensor 2 Circuit Intermittent - AutoCodes.com — P2085 Cadillac Code - Exhaust Gas Temperature Sensor 2 Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P2085 Cadillac?

Exhaust leaks
Faulty Exhaust Gas Temperature Sensor (EGTS) 2
Exhaust Gas Temperature Sensor 2 harness is open or shorted
Exhaust Gas Temperature Sensor 2 circuit poor electrical connection
Excessive particulate matter buildup on sensor
Faulty Engine Control Module (ECM)

How to Fix the DTC P2085 Cadillac?

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 P2085 Cadillac 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 P2085 Cadillac code?

Need more information on how to fix the P2085 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2085 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P2085 Cadillac Code

1. What are the common symptoms of OBDII code P2085 in a Cadillac related to the Exhaust Gas Temperature Sensor 2 Circuit Intermittent?

- The common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P2085 in a Cadillac?

- The code P2085 can be caused by a faulty exhaust gas temperature sensor, damaged wiring or connectors, or issues with the sensor circuit.

3. How can I diagnose OBDII code P2085 in my Cadillac?

- To diagnose code P2085, you can use an OBDII scanner to retrieve the code and then inspect the exhaust gas temperature sensor, wiring, and connectors for any visible damage.

4. Can I continue driving my Cadillac with OBDII code P2085 present?

- It is not recommended to drive your Cadillac with code P2085 present, as it can lead to further damage to the engine and emissions system. It is best to address the issue promptly.

5. How can I repair OBDII code P2085 in my Cadillac?

- Repairing code P2085 typically involves replacing the faulty exhaust gas temperature sensor, repairing any damaged wiring or connectors, and clearing the code using an OBDII scanner.

6. Are there any DIY tips for fixing OBDII code P2085 in a Cadillac?

- While replacing the exhaust gas temperature sensor may require some knowledge and tools, checking and cleaning the connectors and wiring related to the sensor can be a DIY-friendly step.

7. Will resetting the Check Engine Light resolve OBDII code P2085 in a Cadillac?

- Resetting the Check Engine Light may temporarily turn it off, but the underlying issue causing code P2085 will still remain. It is essential to diagnose and repair the problem to prevent it from reoccurring.

8. Can extreme weather conditions affect OBDII code P2085 in a Cadillac?

- Extreme temperatures can potentially affect the exhaust gas temperature sensor and its circuit, leading to intermittent issues and triggering code P2085 in a Cadillac.

9. How long does it typically take to repair OBDII code P2085 in a Cadillac?

- The repair time for OBDII code P2085 can vary depending on the extent of the issue and the availability of parts. Generally, it can take anywhere from 1 to 3 hours to diagnose and fix the problem.

10. Is it necessary to take my Cadillac to a dealership for OBDII code P2085 repair?

- While a dealership can provide specialized service, an experienced independent mechanic or automotive technician can also effectively diagnose and repair OBDII code P2085 in a Cadillac.