P1111 2017 Chevrolet Silverado Code - Intake Air Temperature Sensor Circuit Intermittent High Voltage
Quick Answer
The Intake Air Temperature (IAT) sensor 1 is a variable resistor that changes the voltage on the Engine Control Module (ECM) supplied 5 V signal circuit. Common causes include Faulty Intake Air Temperature (IAT) sensor (Integrated within the Mass Air Flow / Multifunction Intake Air Sensor), Intake Air Temperature sensor harness is open or shorted, Intake Air 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
- P1111 2017 Chevrolet Silverado indicates Intake Air Temperature Sensor Circuit Intermittent High Voltage.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor (Integrated within the Mass Air Flow / Multifunction Intake Air Sensor), Intake Air Temperature sensor harness is open or shorted, Intake Air 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 P1111 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1111 2017 Chevrolet Silverado?
- Faulty Intake Air Temperature (IAT) sensor (Integrated within the Mass Air Flow / Multifunction Intake Air Sensor)
- Intake Air Temperature sensor harness is open or shorted
- Intake Air Temperature sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1111 2017 Chevrolet Silverado?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1111 2017 Chevrolet Silverado 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 P1111 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P1111 on a 2017 Chevrolet Silverado?
- Common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and potential stalling.
2. What does the OBDII code P1111 indicate in a 2017 Chevrolet Silverado?
- The code P1111 indicates an issue with the Intake Air Temperature Sensor Circuit showing intermittent high voltage.
3. What are the possible causes of the Intake Air Temperature Sensor Circuit intermittent high voltage issue on a 2017 Chevrolet Silverado?
- Possible causes include a faulty intake air temperature sensor, damaged wiring or connectors, or a problem with the sensor circuit itself.
4. How can I diagnose the cause of the P1111 code on my 2017 Chevrolet Silverado?
- You can diagnose the issue by visually inspecting the sensor and its connections, testing the sensor's resistance, and using a scan tool to monitor sensor readings.
5. Is it safe to continue driving my 2017 Chevrolet Silverado with the P1111 code?
- It is not recommended to drive the vehicle with the P1111 code present, as it can lead to further engine damage and decreased performance.
6. Can I repair the Intake Air Temperature Sensor Circuit issue on my 2017 Chevrolet Silverado myself?
- Depending on your skill level, you may be able to replace the intake air temperature sensor or repair damaged wiring yourself. However, professional diagnosis and repair are recommended for accurate resolution.
7. How much does it typically cost to fix the P1111 code on a 2017 Chevrolet Silverado?
- The cost of fixing the issue can vary depending on the root cause. It may range from a simple sensor replacement costing around $50 to more extensive repairs involving wiring or circuit issues costing several hundred dollars.
8. Will resetting the OBDII code P1111 on my 2017 Chevrolet Silverado make the problem go away?
- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the high voltage in the Intake Air Temperature Sensor Circuit.
9. Can extreme weather conditions affect the Intake Air Temperature Sensor Circuit on a 2017 Chevrolet Silverado?
- Yes, extreme heat or cold can impact the sensor's readings and potentially trigger the intermittent high voltage issue associated with the P1111 code.
10. How often should I check the intake air temperature sensor on my 2017 Chevrolet Silverado to prevent the P1111 code from reoccurring?
- It's advisable to include the sensor in your regular vehicle maintenance checks to ensure it is functioning correctly and prevent the recurrence of the P1111 code.
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