P0099 2014 Chevrolet Silverado Code - Intake Air Temperature Sensor 2 Circuit Intermittent
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, 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
- P0099 2014 Chevrolet Silverado indicates Intake Air Temperature Sensor 2 Circuit Intermittent.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) 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 P0099 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0099 2014 Chevrolet Silverado?
- Faulty Intake Air Temperature (IAT) 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 P0099 2014 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
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0099 2014 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 P0099 2014 Chevrolet Silverado Code
1. What does the OBDII code P0099 mean on a 2014 Chevrolet Silverado?
P0099 indicates an intermittent issue with the Intake Air Temperature (IAT) Sensor 2 Circuit, which monitors incoming air temperature for proper engine performance.
2. What are the symptoms of code P0099 in a 2014 Chevrolet Silverado?
Common symptoms include poor fuel efficiency, sluggish acceleration, rough idle, and possible illumination of the check engine light.
3. What causes the P0099 code to appear on a 2014 Chevrolet Silverado?
Possible causes include a faulty IAT sensor, damaged wiring, loose electrical connections, or a malfunctioning engine control module (ECM).
4. How do I diagnose a P0099 code on my 2014 Chevrolet Silverado?
Inspect the IAT sensor, wiring, and connectors for damage. Use a multimeter to test sensor voltage and continuity, and check for intermittent connections.
5. Can a dirty air filter trigger the P0099 code on a 2014 Silverado?
While a dirty air filter can affect performance, it’s unlikely to directly cause the P0099 code. However, it’s good practice to ensure the filter is clean when diagnosing intake-related issues.
6. Can I drive my 2014 Chevrolet Silverado with a P0099 code?
Driving with this code is possible but not recommended, as it can lead to reduced engine performance and potential long-term damage if left unresolved.
7. How do I fix the P0099 code on a 2014 Chevrolet Silverado?
Repairs may involve replacing the IAT sensor, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
8. What tools do I need to fix a P0099 code on a 2014 Silverado?
You’ll need an OBDII scanner, a multimeter, and basic hand tools to inspect and repair the IAT sensor circuit.
9. How much does it cost to repair a P0099 code on a 2014 Chevrolet Silverado?
Repair costs vary but typically range from $50 to $200, depending on whether the IAT sensor needs replacement or wiring repairs are required.
10. Does the P0099 code affect emissions on a 2014 Chevrolet Silverado?
Yes, a faulty IAT sensor can lead to improper air-fuel mixture, which may impact emissions and cause your vehicle to fail an emissions test.
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