P2043
Reductant Temperature Sensor A Circuit Range/Performance
P2043 is an OBD-II diagnostic trouble code meaning: Reductant Temperature Sensor A Circuit Range/Performance. Common causes: reagent temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Possible problems starting the engine
- SCR system stops working
Causes
- Reagent temperature sensor malfunction
- Open or short circuit in the sensor circuit
- Poor contact in the sensor connector
- Wiring harness damage
- Problems with the SCR control module
How to Fix
- Check the continuity of the temperature sensor circuit
- Check sensor connectors and connections
- Check the sensor resistance (compare with the nominal value)
- If necessary, replace the temperature sensor
- Check and update SCR control module software
Related codes
Error P2043 by Vehicle Brand
FAQ
What does the P2043 code mean?
P2043 is an OBD-II diagnostic trouble code that indicates: Reductant Temperature Sensor A Circuit Range/Performance
What causes a P2043 error code?
The most common causes of P2043 include: Reagent temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Wiring harness damage.
How do I fix a P2043 diagnostic trouble code?
To fix P2043: Check the continuity of the temperature sensor circuit. Check sensor connectors and connections. Check the sensor resistance (compare with the nominal value). For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2043?
Yes, but get it checked soon
How much does it cost to fix P2043?
The estimated repair cost for P2043 is $28–89. Actual cost depends on your vehicle, location, and labor rates.
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