P2466 GMC Code - Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3
Quick Answer
The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 3, Exhaust Gas Temperature Sensor Bank 2 Sensor 3 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 3 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P2466 GMC indicates Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 3.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 3, Exhaust Gas Temperature Sensor Bank 2 Sensor 3 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 Sensor 3 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P2466 GMC Description
What are the Possible Causes of the DTC P2466 GMC?
- Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 3
- Exhaust Gas Temperature Sensor Bank 2 Sensor 3 harness is open or shorted
- Exhaust Gas Temperature Sensor Bank 2 Sensor 3 circuit poor electrical connection
- Exhaust leaks
- Excessive particulate matter buildup on sensor
How to Fix the DTC P2466 GMC?
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 P2466 GMC 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 P2466 GMC Code
1. What does the OBDII code P2466 mean on a GMC vehicle?
P2466 indicates an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit for Bank 2, Sensor 3. The sensor is not providing proper readings to the engine control module (ECM).
2. What are the common symptoms of code P2466?
Symptoms may include the check engine light turning on, decreased fuel efficiency, reduced engine performance, or the vehicle entering limp mode.
3. What causes the P2466 code to appear?
Possible causes include a faulty EGT sensor, damaged or corroded wiring, a poor electrical connection, or issues with the ECM interpreting the sensor's signal.
4. How do I diagnose the P2466 code?
Start by using an OBDII scanner to confirm the code. Then inspect the EGT sensor, wiring, and connectors for damage. Use a multimeter to test the sensor’s circuit for continuity and correct resistance.
5. Can I drive my GMC with a P2466 code?
It's not recommended, as prolonged driving with this issue can lead to decreased performance, higher emissions, and potential damage to the exhaust or emissions system.
6. How do I fix the P2466 code?
Repairs may include replacing the faulty EGT sensor, repairing damaged wiring, cleaning corroded connections, or reprogramming/updating the ECM if necessary.
7. Where is Bank 2 Sensor 3 located on a GMC vehicle?
Bank 2 refers to the side of the engine opposite Cylinder 1, and Sensor 3 is typically located downstream, near the diesel particulate filter (DPF) in the exhaust system.
8. How much does it cost to repair a P2466 code?
Repair costs vary but typically range from $150 to $400, depending on whether the EGT sensor needs replacement or if additional wiring repairs are required.
9. Can a dirty diesel particulate filter (DPF) cause the P2466 code?
Yes, a clogged or malfunctioning DPF can cause abnormal exhaust gas temperatures, potentially triggering this code.
10. How can I prevent the P2466 code from recurring?
Regular maintenance of the exhaust system, including the EGT sensors and DPF, along with addressing any check engine light promptly, can help prevent this code.
Discuss the causes and fixes for P2466 GMC OBDII Code
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