P2046

Reductant Temperature Sensor A Circuit Intermittent

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Possible reduction in engine power
Increased fuel consumption
Incorrect operation of the SCR system
Emission errors are possible

Causes

Reagent temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Contact corrosion
Problems with the engine control unit

How to Fix

Check the readings of the reagent temperature sensor
Inspect the sensor wiring and connectors
Check sensor resistance
Replace sensor if necessary
Clean connector contacts

Related codes

P2047 P2048 P2049