Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part of the car's system that checks how hot the exhaust is, is not working properly. It's like a thermometer for the car's exhaust that sometimes gives wrong readings.
The exhaust gas temperature sensor measures the temperature of the exhaust gases and sends this information to the engine control module. If the signal from the sensor is erratic or intermittent, this code is triggered.
The P246A code indicates that the exhaust gas temperature sensor located in Bank 2 Sensor 3 is sending an intermittent or erratic signal to the engine control module (ECM). This sensor is crucial for monitoring the exhaust temperature and ensuring the emissions system operates correctly.
• Check Engine Light illuminated
• Poor fuel economy
• Possible engine performance issues
• Faulty exhaust gas temperature sensor
• Wiring or connection issues in the sensor circuit
• Exhaust leaks affecting sensor readings
Bank 2: The side of the engine opposite Bank 1, usually the side without cylinder 1.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the exhaust gas temperature sensor for proper operation.
• Replace the faulty exhaust gas temperature sensor.
• Repair or replace damaged wiring or connectors.
• Ensure there are no exhaust leaks near the sensor.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $300
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram 2500
• Regularly inspect sensor wiring and connectors.
• Perform routine maintenance on the exhaust system.
• Address exhaust leaks promptly.
Sensor Issue
• If the check engine light is on, have the vehicle inspected by a professional.
• Avoid driving the vehicle hard until the issue is resolved.
Check with the vehicle manufacturer for specific warranty coverage on emissions-related components.
This code has been associated with sensor failures in vehicles with high mileage or those exposed to harsh conditions.
Moderate – It's important to address this issue to maintain engine performance and emissions compliance.
Driving with a malfunctioning emissions system can lead to increased pollution and may not comply with local emissions laws.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The exhaust gas temperature sensor is typically located in the exhaust system, downstream of the catalytic converter on Bank 2.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced engine performance and increased emissions.
Q: Can I drive my car with this code?
A: It's possible to drive, but it's recommended to fix the issue soon to prevent further problems.
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Universal · Digital multimeter
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Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.