P2045

Symptoms

• Check Engine light comes on
• Reduced efficiency of the SCR system
• Possible increase in NOx emissions
• In some cases - limiting engine power
• Unusual reducing agent temperature readings on the instrument panel (if any)

Causes

• Reductant temperature sensor malfunction
• Open or short circuit in the sensor circuit
• Poor connection or corrosion in connectors
• Wiring Harness Problems
• Engine ECU malfunction (rare)

How to Fix

1. Check the continuity of the temperature sensor circuit
2. Inspect connectors and connections for corrosion or damage
3. Check temperature sensor resistance according to manufacturer specifications
4. If necessary, replace the reducing agent temperature sensor
5. Reset the error code and check if it returns

Related codes

Error P2045 by Vehicle Brand