AutoCodes – Buick – P1197 Buick

P1197 Buick Code - Exhaust Gas Temperature Sensor 4 Performance Engine Running

Quick Answer

The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas. Common causes include Faulty Exhaust Gas Temperature Sensor, Exhaust Gas Temperature Sensor harness is open or shorted, Exhaust Gas 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: P1197 Buick indicates Exhaust Gas Temperature Sensor 4 Performance Engine Running.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor, Exhaust Gas Temperature Sensor harness is open or shorted, Exhaust Gas 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 402

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 Mar 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1197 Buick Description

The exhaust gas temperature sensors 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 if the ECM detects that the difference between measured exhaust gas temperature and the estimated exhaust gas temperature is greater than a calibrated amount for greater than 1 s.

OBDII Code P1197 Buick - Exhaust Gas Temperature Sensor 4 Performance Engine Running - AutoCodes.com — P1197 Buick Code - Exhaust Gas Temperature Sensor 4 Performance Engine Running

What does this mean?

What are the Possible Causes of the DTC P1197 Buick?

Faulty Exhaust Gas Temperature Sensor
Exhaust Gas Temperature Sensor harness is open or shorted
Exhaust Gas Temperature Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P1197 Buick?

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 P1197 Buick 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 P1197 Buick code?

Need more information on how to fix the P1197 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1197 Buick Code

1. What are the common symptoms of OBDII code P1197 in a Buick related to the Exhaust Gas Temperature Sensor 4?

The common symptoms include poor engine performance, reduced fuel efficiency, and potential issues with the exhaust system.

2. What can cause the OBDII code P1197 to trigger in a Buick?

The code P1197 is typically triggered when there is a problem with the Exhaust Gas Temperature Sensor 4, such as a faulty sensor, wiring issues, or a problem with the sensor circuit.

3. How can I diagnose the cause of the P1197 code in my Buick?

To diagnose the issue, you can use an OBDII scanner to read the code and check the Exhaust Gas Temperature Sensor 4 for any visible damage or wiring issues. You may also need to perform a thorough inspection of the sensor and its connections.

4. Can a faulty Exhaust Gas Temperature Sensor 4 impact the overall performance of my Buick?

Yes, a faulty sensor can impact the performance of your Buick by causing issues with fuel efficiency, engine timing, and emissions control.

5. What are some repair tips for fixing the P1197 code in a Buick?

Repair tips include checking and replacing the Exhaust Gas Temperature Sensor 4 if necessary, inspecting and repairing any damaged wiring or connections, and clearing the code with an OBDII scanner after the repairs are done.

6. Is it safe to continue driving my Buick with the P1197 code triggered?

It is not recommended to drive your Buick with the P1197 code triggered, as it can lead to further damage to the engine or emissions system. It's best to address the issue promptly.

7. Can a DIY enthusiast fix the P1197 code issue in a Buick?

Depending on your skill level and experience with automotive repairs, you may be able to fix the P1197 code yourself by following repair guides and using the necessary tools and parts.

8. How much does it typically cost to repair the P1197 code in a Buick?

The cost of repairing the P1197 code can vary depending on the extent of the issue and whether you do the repairs yourself or take your Buick to a mechanic. Costs may include parts and labor.

9. Are there any preventive measures to avoid triggering the P1197 code in a Buick?

Regular maintenance of the exhaust system, including checking the condition of the Exhaust Gas Temperature Sensor 4, can help prevent issues that may trigger the P1197 code.

10. How long does it usually take to repair the P1197 code in a Buick?

The repair time for the P1197 code can vary depending on the specific cause of the issue and the complexity of the repair. It can range from a quick sensor replacement to a more involved wiring repair.