P113B 2018 GMC Sierra Code - Exhaust Gas Temperature Sensor 1 Not Plausible
Quick Answer
The P113B diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Exhaust Gas Temperature Sensor 1 is not providing plausible data to the engine control module (ECM). Common causes include Faulty exhaust gas temperature sensor, Wiring issues or shorts in the sensor circuit, Malfunctioning ECM. 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
- P113B 2018 GMC Sierra indicates Exhaust Gas Temperature Sensor 1 Not Plausible.
- Common causes
- Common causes include Faulty exhaust gas temperature sensor, Wiring issues or shorts in the sensor circuit, Malfunctioning ECM.
- 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 P113B 2018 GMC Sierra Description
The P113B diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Exhaust Gas Temperature Sensor 1 is not providing plausible data to the engine control module (ECM). This sensor is responsible for monitoring the exhaust gas temperature, which is crucial for the engine's performance and emissions control. When the sensor fails to provide accurate data, it can lead to various issues with the vehicle's operation.
Common Causes of P113B 2018 GMC Sierra
- Faulty exhaust gas temperature sensor
- Wiring issues or shorts in the sensor circuit
- Malfunctioning ECM
- Exhaust system leaks or damage
- Contaminated exhaust gas temperature sensor
Symptoms of P113B 2018 GMC Sierra
- Decreased fuel efficiency
- Engine misfires
- Rough idling
- Illuminated check engine light
- Reduced engine performance
How to Fix P113B 2018 GMC Sierra
- Use an OBD-II scanner to confirm the P113B code and diagnose the exact cause of the issue.
- Inspect the exhaust gas temperature sensor and its wiring for any damage or corrosion.
- Test the sensor's resistance and voltage output to determine if it is functioning correctly.
- Replace the exhaust gas temperature sensor if it is faulty, and ensure proper installation and calibration.
- Clear the DTC and perform a test drive to verify that the issue has been resolved.
Cost to Fix P113B 2018 GMC Sierra
The typical repair costs for addressing a P113B code on a 2018 GMC Sierra can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
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Frequently Asked Questions about P113B 2018 GMC Sierra Code
1. What does the OBDII code P113B mean in a 2018 GMC Sierra?
The P113B code indicates that the Exhaust Gas Temperature (EGT) Sensor 1 is providing data that is not plausible or outside the expected range for proper engine operation.
2. What are the common symptoms of the P113B code in a 2018 GMC Sierra?
Symptoms may include reduced engine performance, illuminated check engine light, increased emissions, and possible activation of limp mode.
3. What causes the P113B code in a GMC Sierra?
Common causes include a faulty exhaust gas temperature sensor, wiring or connector issues, excessive soot buildup on the sensor, or an engine control module (ECM) software glitch.
4. How do you diagnose the P113B code?
Diagnosis involves scanning for codes, inspecting the EGT sensor and its wiring for damage or corrosion, testing the sensor’s resistance, and monitoring live data with a scan tool.
5. Can you drive with the P113B code active?
It is not recommended to drive for extended periods with this code, as it can lead to increased emissions and potential damage to the exhaust aftertreatment system.
6. How do you fix the P113B code on a 2018 GMC Sierra?
Repairs may include replacing the faulty EGT sensor, repairing damaged wiring or connectors, cleaning soot buildup, or updating the ECM software if necessary.
7. Where is Exhaust Gas Temperature Sensor 1 located on a GMC Sierra?
Sensor 1 is typically located in the exhaust system, upstream of the diesel particulate filter (DPF) or catalytic converter.
8. How much does it cost to repair the P113B code on a GMC Sierra?
The cost varies but replacing an EGT sensor typically ranges from $150 to $300, including parts and labor. Additional diagnostic or wiring repairs may increase the cost.
9. Can a clogged DPF cause the P113B code?
Yes, a clogged DPF can lead to abnormal exhaust conditions, which may cause the EGT sensor to send implausible signals.
10. Does the P113B code require reprogramming the ECM?
Reprogramming the ECM may be necessary if a software update is available to address sensor plausibility issues, but this depends on the specific circumstances.
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