P116E 2018 Chevrolet Silverado Code - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)
Quick Answer
The P116E diagnostic trouble code (DTC) in a 2018 Chevrolet Silverado indicates a problem with the O2 pump current control circuit, specifically relating to the NOx Sensor 1. Common causes include Wiring Faults: Corrosion, damage, or loose connections in the wiring harness can disrupt the O2 pump current control circuit, Faulty NOx Sensor: A malfunctioning NOx sensor can lead to inaccurate readings and trigger this code, Malfunctioning O2 Pump: Issues with the O2 pump can affect the current control circuit and cause low voltage. 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
- P116E 2018 Chevrolet Silverado indicates O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1).
- Common causes
- Common causes include Wiring Faults: Corrosion, damage, or loose connections in the wiring harness can disrupt the O2 pump current control circuit, Faulty NOx Sensor: A malfunctioning NOx sensor can lead to inaccurate readings and trigger this code, Malfunctioning O2 Pump: Issues with the O2 pump can affect the current control circuit and cause low voltage.
- 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 P116E 2018 Chevrolet Silverado Description
The P116E diagnostic trouble code (DTC) in a 2018 Chevrolet Silverado indicates a problem with the O2 pump current control circuit, specifically relating to the NOx Sensor 1. The NOx sensor is responsible for monitoring the levels of nitrogen oxide in the exhaust gases to ensure compliance with emissions regulations. The O2 pump current control circuit is crucial for regulating the operation of the NOx sensor.
Common Causes of P116E 2018 Chevrolet Silverado
- Wiring Faults: Corrosion, damage, or loose connections in the wiring harness can disrupt the O2 pump current control circuit.
- Faulty NOx Sensor: A malfunctioning NOx sensor can lead to inaccurate readings and trigger this code.
- Malfunctioning O2 Pump: Issues with the O2 pump can affect the current control circuit and cause low voltage.
- ECM Malfunction: Problems with the engine control module (ECM) can interfere with the proper operation of the O2 pump current control circuit.
Symptoms of P116E 2018 Chevrolet Silverado
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
- Reduced Fuel Efficiency: A decrease in fuel efficiency may be noticed due to the inaccurate readings from the NOx sensor.
- Rough Idle: The vehicle may experience rough idling or hesitation during acceleration.
- Failed Emissions Test: If the issue is not resolved, the vehicle may fail emissions tests due to increased emissions.
How to Fix P116E 2018 Chevrolet Silverado
- Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and pinpoint the exact cause of the problem.
- Inspect Wiring: Check the wiring harness for any damage, corrosion, or loose connections and repair or replace as needed.
- Test NOx Sensor: Test the NOx sensor to determine if it is functioning correctly and replace if necessary.
- Check O2 Pump: Inspect the O2 pump for any malfunctions and replace if found to be faulty.
- ECM Check: Verify the operation of the engine control module (ECM) and address any issues that may be affecting the O2 pump current control circuit.
Cost to Fix P116E 2018 Chevrolet Silverado
The typical repair costs for addressing the P116E code in a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the parts required for this repair, such as a new NOx sensor or O2 pump, can range from $200 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total repair bill could amount to $300 to $800 or more, depending on the extent of the repairs needed. It's advisable to consult with a professional mechanic for a more accurate estimate based on the specific circumstances of the vehicle.
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Frequently Asked Questions about P116E 2018 Chevrolet Silverado Code
1. What does the OBDII code P116E mean for a 2018 Chevrolet Silverado?
The code P116E indicates "O2 Pump Current Control Circuit Low Voltage" related to NOx Sensor 1, which monitors nitrogen oxide levels in the exhaust system.
2. What are common symptoms of the P116E code?
Symptoms may include a check engine light, reduced fuel efficiency, diminished engine performance, and issues with emissions compliance.
3. What causes the P116E code to appear?
Common causes include a faulty NOx sensor, wiring issues, poor electrical connections, or a malfunctioning engine control module (ECM).
4. Can driving with the P116E code damage my vehicle?
Prolonged driving with this code can increase emissions and may lead to engine performance problems, but immediate damage is unlikely unless other issues are also present.
5. How do I diagnose the P116E code?
Use an OBDII scanner to confirm the code, perform a visual inspection of the NOx sensor and wiring, and check for proper voltage and continuity in the circuit.
6. How do I fix the P116E code?
Repairs may include replacing the NOx sensor, repairing damaged wiring, ensuring proper electrical connections, or reprogramming the ECM if necessary.
7. How much does it cost to repair the P116E code?
Costs vary depending on the issue, but replacing a NOx sensor typically ranges from $300 to $600, including parts and labor.
8. Can a dirty exhaust system cause the P116E code?
While unlikely, excessive soot buildup can interfere with NOx sensor readings, though the issue typically lies with the sensor or circuit itself.
9. Is the P116E code related to fuel quality?
Poor fuel quality can contribute to higher NOx emissions, but it is not a direct cause of the P116E code.
10. Do I need a mechanic to fix the P116E code?
If you're comfortable with electrical diagnostics and sensor replacement, you can attempt the repair yourself. Otherwise, it's best to seek professional assistance.
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