P113B 2018 GMC Sierra Code - Exhaust Gas Temperature Sensor 1 Not Plausible
Quick Answer
The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas at the inlet and outlet of the diesel oxidation catalyst as well as the inlet and outlet of the Diesel Particulate Filter (DPF). 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
- P113B 2018 GMC Sierra indicates Exhaust Gas Temperature Sensor 1 Not Plausible.
- 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.
Code P113B 2018 GMC Sierra Description
What are the Possible Causes of the DTC P113B 2018 GMC Sierra?
- 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 P113B 2018 GMC Sierra?
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 P113B 2018 GMC Sierra 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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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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