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Error Code P043D: What It Means & What To Do?

OBD Code P043D - Catalyst Temperature Sensor Circuit High (Bank 2 Sensor 2)

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Is your vehicle flashing that OBD error code P043D? Is your catalyst temperature sensor circuit high? Well, in this case we recommend you to undergo a complete diagnosis of this problem and maybe replace your faulty fuel pumps and other related parts.

Learn More about OBD Error Code P043D

Let’s try understand this error code P043D in a common layman language. The error code P043D relates to your vehicle’s catalyst temperature circuit being high. Powertrain control module will set this error code when it detects the incorrect signals from the catalytic converter temperature sensor. This indicates that the problem is there with the second bank of the engine.


What causes this problem with the Catalyst Temperature Sensor Circuit High Bank 2 Sensor 2?


  • Damaged oxygen sensor
  • Problematic wirings
  • Errors with the powertrain control module
  • Out of balance exhaust air/fuel mixture

Replace/Repair These Parts To Fix OBD Code P043D

  1. Catalytic Converter - Replacing the faulty catalytic converter becomes really important to get rid of this problem. What are you waiting for? Just browse through our website to find best cat converters for your vehicles.
  2. Temperature Sensor - Considering the fact that damaged temperature sensors can cause this problem, you might need them fixed or replaced to get this issue corrected. You can easily find top quality temperature sensor with us.
  3. Engine Control Module - Is your ECM damaged? Worried about the replacement cost? Well, you no longer need to worry about that as we have for you best priced ECM’S in stock.
  4. PCM - We have in stock wide selection of PCM specific to every make and model. You can shop them with us 24x7 in just one click.
  5. Oxygen Sensor - If you are looking for oxygen sensors to fix your problem, then we have a good news for you. We have in stock oxygen sensor for all make and models and that too at best prices.
  6. Exhaust System Parts - since OBD error code P043D might be caused by few damaged exhaust parts, you might need brand new ones to fix the issue.
  7. Engine Parts - If you need engine parts to correct this issue at best prices then we at PartsAvatar can be your dream destination. We have in stock best priced engine parts from top brands.
  8. Fuel Delivery Parts - Considering the fact that damaged fuel delivery parts can cause this problem, you might need them fixed or replaced to get this issue corrected. You can easily find top quality fuel parts with us.
  9. Ignition Parts - P043D error code might have to do with ignition parts being faulty. The PartsAvatar website offers a comprehensive range of ignition parts for you to select from that is the right fit for your car.
  10. Cylinder Head Gasket - if you are looking for high end cylinder head gasket for your vehicle, then you can find them all with us. So, if you want one you can simply get that with us at best prices.
  11. VCT Solenoid Valve - Looking for top quality VCT Solenoid Valve? If YES, you can find them with us for all makes and models.

Symptoms Of OBD Error Code P043D

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P043D here:


Common Symptoms


  • Flashing of check engine light
  • Fall in overall engine performance
  • Decline in fuel economy
  • Rise in emissions

How To Correct P043D Catalyst Temperature Sensor Circuit High (Bank 2 Sensor 2)

Here are some ways with the help of which you will be able to correct the OBD Code P043D


Fixing all the damaged parts such as cat converters, oxygen sensors, coolant temperature, VCT valve solenoid and more, if found faulty.


There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade Catalytic Converter, Temperature Sensor, Engine Control Module, PCM, Oxygen Sensor, Wiring, Exhaust System, Engine Parts, Fuel Delivery parts, Ignition system parts, Connector, Cylinder Head Gasket, VCT Solenoid Valve, EGR Valve and a lot more for our precious customers.

Easy Diagnosis Of Engine Error OBD Code P043D

Here are some steps which you should follow in order to diagnose this fault code:

In order to diagnose this error code P043D, you will need a scan tool or an oscilloscope. Connect the scan tool the diagnostic portal of your vehicle and switch it on.


OBD error code P043D, indicates some problem with the catalyst temperature sensor but just replacing the sensor might not be enough as the problem is likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.


Common Mistakes When Diagnosing the P043D Code


In order to avoid any misdiagnosis, make sure to check for the following failure:


  • Failing cat converter temperature sensor
  • Failing PCM
  • Issues with the wires

Other Diagnostic Codes Related To OBD Code P043D

P043A - Catalyst Temperature Sensor Circuit (Bank 2 Sensor 2)

P043B - Catalyst Temperature Sensor Circuit Range/Performance Bank 2 Sensor 2)

P043C - Catalyst Temperature Sensor Circuit Low (Bank 2 Sensor 2)