P046A OBD-II: Catalyst Temperature Sensor 1/2 Correlation

P046A Severity

Moderate

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.

Schedule Diagnosis

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.

Need a P046A diagnosis? Trust our experts.

RepairPal Certified shops provide expert diagnostics and repairs with transparent upfront pricing and a minimum 12-month or 12,000-mile warranty on all services.

OBD II Fault Code

  • OBD II P046A

OBD-II Code Catalytic converter temperature sensor failure is defined as a Catalyst Temperature Sensor 1/2 Correlation

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.

Common Problems That Trigger the P046A Code

  • Catalytic converter temperature sensor failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue
RepairPal Car Genius

Ask our experts about P046A.

RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.

 Auto Repair Expert Auto Repair Expert

Call us at 877-913-1554

Available 9am – 6pm ET Monday through Friday

Call Our Experts