The P2046 trouble code indicates that the reductant temperature sensor circuit is experiencing intermittent issues.
P2046 Reductant Temperature Sensor Circuit Intermittent
Code symptoms P2046.
1. Malfunction indicator lamp (MIL) or Check Engine Light (CEL) illuminated intermittently.
2. Inconsistent changes in exhaust emissions.
3. Intermittent reduction in fuel efficiency.
4. Intermittent decrease in engine performance.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2046.
1. Loose or corroded connections in the reductant temperature sensor circuit.
2. Faulty reductant temperature sensor.
3. Wiring harness issues, such as chafing or damage.
4. Intermittent faults in the power supply to the sensor circuit.
Code Solutions P2046.
1. Inspect the reductant temperature sensor and its connections for any signs of corrosion, damage, or looseness. Repair or replace as necessary.
2. Check the wiring harness for any damage, chafing, or breaks. Repair or replace damaged sections of the wiring harness.
3. Test the power supply to the sensor circuit to ensure it is consistent and within specifications. Repair any faults in the power supply.
4. Clear the trouble codes and monitor the system for any recurrence of the issue.