P2218 Code - NOx Sensor Heater Control Circuit/Open Bank 2
Quick Answer
The Nitrogen Oxide (NOx) sensor measures the amount of nitric oxide and nitrogen oxide in the exhaust system. Common causes include Faulty Nitrogen Oxide (NOx) Sensor, Nitrogen Oxide (NOx) Sensor harness is open or shorted, Nitrogen Oxide (NOx) 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
- P2218 indicates NOx Sensor Heater Control Circuit/Open Bank 2.
- Common causes
- Common causes include Faulty Nitrogen Oxide (NOx) Sensor, Nitrogen Oxide (NOx) Sensor harness is open or shorted, Nitrogen Oxide (NOx) 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 P2218 Description
What are the Possible Causes of the DTC P2218?
- Faulty Nitrogen Oxide (NOx) Sensor
- Nitrogen Oxide (NOx) Sensor harness is open or shorted
- Nitrogen Oxide (NOx) Sensor circuit poor electrical connection
How to Fix the DTC P2218?
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 P2218 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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Information for Specific Makes
- P2218 Chevrolet — NOx Sensor Heater Control Circuit/Open Bank 2
- P2218 Dodge — NOx Sensor Heater Control Circuit/Open Bank 2
- P2218 Ford — NOx Sensor Heater Control Circuit/Open Bank 2
- P2218 GMC — NOx Sensor Heater Control Circuit/Open Bank 2
Frequently Asked Questions about P2218 Code
1. What does the OBDII code P2218 mean?
P2218 indicates a problem with the NOx sensor heater control circuit on Bank 2, which may be open or malfunctioning.
2. What are the common symptoms of code P2218?
Symptoms include poor engine performance, reduced fuel efficiency, increased emissions, and the check engine light illuminating.
3. What causes the P2218 code?
Possible causes include a faulty NOx sensor heater, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).
4. How can I diagnose the P2218 code?
Diagnose the code by inspecting the NOx sensor wiring and connectors for damage, checking for blown fuses, and testing the sensor heater circuit with a multimeter.
5. Can I drive my car with code P2218?
Driving with this code is not recommended, as it can lead to increased emissions and potential damage to the catalytic converter or engine components.
6. How is code P2218 typically repaired?
Repairs may involve replacing the NOx sensor, repairing damaged wiring or connectors, or addressing issues with the ECM.
7. What does the NOx sensor heater do?
The NOx sensor heater ensures the sensor operates effectively by maintaining the proper temperature for accurate nitrogen oxide measurements.
8. How much does it cost to fix code P2218?
Repair costs can range from $200 to $600 or more, depending on whether the NOx sensor or other components need replacement.
9. Is code P2218 related to emissions testing?
Yes, a malfunctioning NOx sensor can cause your vehicle to fail emissions testing due to higher pollutant levels.
10. What tools are needed to troubleshoot code P2218?
Common tools include an OBDII scanner, a multimeter, and basic hand tools for inspecting and repairing wiring or components.
Discuss the causes and fixes for P2218 OBDII Code
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