P246A Code - Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3
Quick Answer
The P246A code indicates a problem with the Exhaust Gas Temperature (EGT) sensor circuit for Bank 2 Sensor 3. Common causes include Faulty EGT Sensor: The EGT sensor itself may be faulty, providing incorrect readings to the ECM, Wiring Issues: Damage or corrosion in the wiring harness connected to the EGT sensor can cause intermittent or erratic signals, ECM Malfunction: A malfunctioning ECM may not be able to properly interpret the signals from the EGT sensor. 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
- P246A indicates Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3.
- Common causes
- Common causes include Faulty EGT Sensor: The EGT sensor itself may be faulty, providing incorrect readings to the ECM, Wiring Issues: Damage or corrosion in the wiring harness connected to the EGT sensor can cause intermittent or erratic signals, ECM Malfunction: A malfunctioning ECM may not be able to properly interpret the signals from the EGT sensor.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P246A Description
The P246A code indicates a problem with the Exhaust Gas Temperature (EGT) sensor circuit for Bank 2 Sensor 3. This sensor is responsible for monitoring the exhaust gas temperature in the exhaust system, specifically for the third cylinder on the second bank of the engine. An intermittent or erratic signal from this sensor can lead to issues with engine performance, emissions, and fuel efficiency.
Common Causes of P246A
- Faulty EGT Sensor: The EGT sensor itself may be faulty, providing incorrect readings to the ECM.
- Wiring Issues: Damage or corrosion in the wiring harness connected to the EGT sensor can cause intermittent or erratic signals.
- ECM Malfunction: A malfunctioning ECM may not be able to properly interpret the signals from the EGT sensor.
- Exhaust System Leaks: Leaks in the exhaust system can affect the readings of the EGT sensor, triggering this code.
- Sensor Placement: Improper placement of the EGT sensor in the exhaust system can also lead to inaccurate readings.
Symptoms of P246A
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
- Decreased Performance: The vehicle may experience a decrease in performance, including reduced power and acceleration.
- Increased Emissions: A faulty EGT sensor can lead to increased emissions, potentially causing the vehicle to fail emissions tests.
- Poor Fuel Efficiency: Incorrect fuel mixture adjustments can result in poor fuel efficiency, leading to more frequent trips to the gas station.
How to Fix P246A
- Diagnostic: Begin by using a diagnostic scanner to retrieve the specific details of the code and confirm the issue with the EGT sensor circuit.
- Check Wiring: Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace any faulty wiring.
- Replace EGT Sensor: If the sensor is determined to be faulty, replace it with a new sensor that meets the specifications of the vehicle.
- Clear Codes: After making the necessary repairs, clear the diagnostic trouble codes (DTCs) from the ECM to reset the system.
- Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the check engine light does not reappear.
Cost to Fix P246A
The cost of repairing a P246A code can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. Generally, replacing the EGT sensor and addressing any wiring issues can cost between $200 and $500, including parts and labor. It is important to note that labor rates can vary significantly, so it is advisable to check with local repair shops for a more accurate estimate.
Need more information about the P246A code?
Need more information on how to fix the P246A code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P246A code diagnosed by a professional: Find a repair shop in your area
Code P246A Information for Specific Makes
- P246A Chevrolet — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3
- P246A Dodge — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3
- P246A Ford — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3
- P246A GMC — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 3
Frequently Asked Questions about P246A Code
No Frequently Asked Questions about P246A Code found.
Discuss the causes and fixes for P246A OBDII Code
Code P246A comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.