P116E 2018 GMC Sierra Code - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)
Quick Answer
The P116E diagnostic trouble code (DTC) in a 2018 GMC Sierra indicates a problem with the O2 pump current control circuit, specifically relating to the NOx Sensor 1. Common causes include Wiring harness issues, Faulty NOx sensor, ECM malfunction. 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 GMC Sierra indicates O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1).
- Common causes
- Common causes include Wiring harness issues, Faulty NOx sensor, ECM malfunction.
- 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 GMC Sierra Description
The P116E diagnostic trouble code (DTC) in a 2018 GMC Sierra indicates a problem with the O2 pump current control circuit, specifically relating to the NOx Sensor 1. This code suggests that the voltage in the circuit is lower than the expected range, which can lead to issues with the vehicle's emissions control system. The NOx sensor plays a crucial role in monitoring and regulating the levels of nitrogen oxides in the exhaust gases, helping to ensure compliance with emission standards.
Common Causes of P116E 2018 GMC Sierra
- Wiring harness issues
- Faulty NOx sensor
- ECM malfunction
- Corrosion or damage to electrical connectors
- Poor quality fuel
Symptoms of P116E 2018 GMC Sierra
- Decreased fuel efficiency
- Increased emissions
- Rough engine idle
- Hesitation or stalling
- Failed emissions test
How to Fix P116E 2018 GMC Sierra
- Perform a thorough inspection of the wiring harness and connectors for any signs of damage or corrosion.
- Test the NOx sensor to determine if it is functioning properly.
- Check the ECM for any fault codes and reprogram if necessary.
- Replace any faulty components, such as the NOx sensor or damaged wiring.
- Clear the DTC and perform a test drive to ensure the issue has been resolved.
Cost to Fix P116E 2018 GMC Sierra
The cost of repairing a P116E code in a 2018 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the parts for this repair could range from $100 to $300, while labor costs could range from $150 to $400. Overall, the total repair cost could fall between $250 and $700. It's important to note that these estimates are general and may vary based on factors such as location, shop rates, and the availability of parts. It's recommended to obtain quotes from local auto repair shops for a more accurate cost estimate.
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Frequently Asked Questions about P116E 2018 GMC Sierra Code
1. What does the OBDII code P116E mean on a 2018 GMC Sierra?
P116E refers to "O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)," indicating an issue with the voltage in the circuit controlling the oxygen pump within the NOx sensor.
2. What are the common symptoms of P116E in a 2018 GMC Sierra?
Symptoms include the check engine light turning on, reduced fuel efficiency, increased emissions, and possible engine performance issues like rough idling or hesitation.
3. What causes the P116E code to appear?
Common causes include a faulty NOx sensor, damaged wiring or connectors in the sensor circuit, a malfunctioning ECM, or low voltage in the control circuit.
4. Can I drive my 2018 GMC Sierra with the P116E code active?
While the vehicle may still run, it is not recommended to drive for extended periods as the issue can lead to increased emissions and potential damage to the catalytic converter.
5. How is the P116E code diagnosed?
A technician will use a scan tool to confirm the code, inspect the NOx sensor and its wiring for damage, and measure voltage and resistance in the circuit to identify the fault.
6. How do you fix the P116E code on a 2018 GMC Sierra?
Repairs may include replacing the NOx sensor, repairing or replacing damaged wiring or connectors, or reprogramming/repairing the ECM if needed.
7. How much does it cost to repair the P116E code on a 2018 GMC Sierra?
Repair costs vary but typically range from $300 to $600, depending on whether the NOx sensor or wiring needs replacement.
8. Can a dirty or clogged NOx sensor trigger the P116E code?
While the sensor itself cannot become "clogged," contamination or failure of internal components could lead to the code being triggered.
9. Can a weak battery cause the P116E code?
Yes, a weak or failing battery may result in low voltage in the circuit, which can contribute to triggering the P116E code.
10. Is there a way to prevent the P116E code from appearing?
Regular maintenance, including inspecting the NOx sensor and wiring, ensuring a healthy battery, and addressing emissions-related issues promptly, can help prevent this code.
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