P0426 Code - Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1
Quick Answer
The Engine Control Module (ECM) monitors the Catalyst Temperature Sensor Circuit Performance, which measures the temperature of the catalyst. Common causes include Faulty Catalyst Temperature Sensor, Catalyst Temperature Sensor harness is open or shorted, Catalyst Temperature Sensor 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
- P0426 indicates Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1.
- Common causes
- Common causes include Faulty Catalyst Temperature Sensor, Catalyst Temperature Sensor harness is open or shorted, Catalyst Temperature Sensor 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 P0426 Description
What are the Possible Causes of the DTC P0426?
- Faulty Catalyst Temperature Sensor
- Catalyst Temperature Sensor harness is open or shorted
- Catalyst Temperature Sensor circuit poor electrical connection
How to Fix the DTC P0426?
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 P0426 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.
Need more information about the P0426 code?
Need more information on how to fix the P0426 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0426 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P0426 Audi — Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1
- P0426 Volkswagen — Catalyst Temperature Sensor Range/Performance Bank 1 Sensor 1
Frequently Asked Questions about P0426 Code
1. What are the common symptoms of OBDII code P0426?
- Common symptoms include reduced engine performance, poor fuel economy, and illuminated Check Engine Light.
2. What does the OBDII code P0426 indicate?
- The code P0426 indicates an issue with the Catalyst Temperature Sensor Range/Performance on Bank 1 Sensor 1.
3. What are the possible causes of OBDII code P0426?
- Possible causes include a faulty catalyst temperature sensor, wiring issues, exhaust system leaks, or a malfunctioning PCM.
4. How can I diagnose OBDII code P0426?
- Diagnose the code by checking the sensor's wiring and connections, testing the sensor's resistance, and inspecting the exhaust system for leaks.
5. Can I continue driving with OBDII code P0426?
- It is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.
6. How can I repair OBDII code P0426?
- The repair may involve replacing the faulty catalyst temperature sensor, repairing any wiring issues, fixing exhaust leaks, or resetting the PCM.
7. Is it possible to reset OBDII code P0426 without repairs?
- Resetting the code without addressing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely reappear.
8. Can a DIY enthusiast fix OBDII code P0426?
- Depending on the diagnosis, a DIY enthusiast with proper tools and knowledge may be able to replace the sensor or address wiring issues.
9. How much does it cost to repair OBDII code P0426 at a mechanic?
- The cost of repair can vary based on the specific issue, but it may range from $200 to $500 at a mechanic, including parts and labor.
10. How long does it take to repair OBDII code P0426?
- The repair time can vary depending on the complexity of the issue, but it typically takes 1-2 hours for a mechanic to diagnose and fix the problem.
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