P046A OBD-II: Catalyst Temperature Sensor 1/2 Correlation
P046A Severity
Will P046A go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P046A?
The Catalytic Converter uses multiple temperature sensors to ensure that the Catalytic Converter is working properly and does not overheat. The engine control module (PCM) will compare readings from multiple temperature sensors to ensure that all sensors are properly calibrated. If the PCM determines that one or more sensors has lost its calibration, the PCM will set code P046A.
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