P1198 2017 GMC Sierra Code - Exhaust Gas Temperature Sensor 5 Performance Engine Running
Quick Answer
The P1198 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a performance issue with Exhaust Gas Temperature Sensor 5 while the engine is running. Common causes include Faulty Exhaust Gas Temperature Sensor 5, Wiring or connector issues related to the sensor, Exhaust system leaks. 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
- P1198 2017 GMC Sierra indicates Exhaust Gas Temperature Sensor 5 Performance Engine Running.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor 5, Wiring or connector issues related to the sensor, Exhaust system leaks.
- 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 P1198 2017 GMC Sierra Description
The P1198 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a performance issue with Exhaust Gas Temperature Sensor 5 while the engine is running. This sensor is responsible for monitoring the temperature of the exhaust gases leaving the engine. The data collected by this sensor is crucial for the engine control module (ECM) to adjust fuel delivery and optimize engine performance. When the ECM detects that the performance of Exhaust Gas Temperature Sensor 5 is not within the expected parameters, it triggers the P1198 code.
Common Causes of P1198 2017 GMC Sierra
- Faulty Exhaust Gas Temperature Sensor 5
- Wiring or connector issues related to the sensor
- Exhaust system leaks
- ECM software issues
- Exhaust gas temperature sensor circuit malfunction
Symptoms of P1198 2017 GMC Sierra
- Decreased fuel efficiency
- Engine misfires
- Rough idling
- Loss of power
- Illuminated check engine light
How to Fix P1198 2017 GMC Sierra
- Begin by diagnosing the issue using a scan tool to confirm the P1198 code and pinpoint the exact cause of the problem.
- Inspect the Exhaust Gas Temperature Sensor 5 and its wiring for any visible damage or corrosion. Replace the sensor if necessary.
- Check for exhaust system leaks and repair them if found.
- Clear the DTC from the ECM memory and reset the system to see if the issue persists.
- Test drive the vehicle to ensure that the repair was successful and that the symptoms associated with the P1198 code have been resolved.
Cost to Fix P1198 2017 GMC Sierra
The typical repair costs for addressing a P1198 code on a 2017 GMC Sierra can vary depending on the exact cause of the issue. Replacement of the Exhaust Gas Temperature Sensor 5 and related parts may range from $100 to $300, while labor costs can add an additional $80 to $150 per hour. It is advisable to check with local auto repair shops for more accurate estimates based on your specific location and vehicle. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops may offer more competitive pricing.
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Frequently Asked Questions about P1198 2017 GMC Sierra Code
1. What does the OBDII code P1198 mean on a 2017 GMC Sierra?
P1198 indicates an issue with the performance of Exhaust Gas Temperature (EGT) Sensor 5 while the engine is running, signaling that the sensor's readings are outside the expected range.
2. What are the symptoms of code P1198 in a 2017 GMC Sierra?
Common symptoms include reduced fuel efficiency, poor engine performance, the Check Engine Light turning on, and potentially entering limp mode.
3. What causes code P1198 to appear?
The main causes can include a faulty Exhaust Gas Temperature Sensor 5, damaged wiring or connectors, soot buildup on the sensor, or issues with the engine control module (ECM).
4. How can I fix the P1198 code on my GMC Sierra?
Inspect and clean the EGT sensor, check for damaged wiring or connectors, and replace the sensor if necessary. If the issue persists, have the ECM tested by a professional.
5. Can I drive my 2017 GMC Sierra with code P1198?
Driving with this code is not recommended as it may lead to reduced engine performance, higher emissions, and potential damage to the exhaust or turbo systems.
6. Where is Exhaust Gas Temperature Sensor 5 located on a 2017 GMC Sierra?
EGT Sensor 5 is typically located in the exhaust system, downstream of the turbocharger or near the diesel particulate filter (DPF).
7. How much does it cost to repair code P1198?
Repair costs can vary, but replacing the EGT sensor generally costs between $150 and $300, including parts and labor.
8. Can a dirty Exhaust Gas Temperature Sensor cause code P1198?
Yes, soot or carbon buildup on the sensor can affect its performance and trigger the P1198 code.
9. Do I need to replace the ECM if I have code P1198?
Replacing the ECM is rarely necessary for this code. Start by addressing the EGT sensor and wiring issues before considering ECM replacement.
10. How do I prevent the P1198 code from occurring again?
Regular maintenance, including cleaning or inspecting the exhaust system and sensors, can help prevent soot buildup and wiring issues that lead to this code.
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