U3571

Stack Outlet Coolant Temperature Sensor 1 Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Decreased fuel efficiency
Problems with diesel particulate filter regeneration
Rough engine idling

Causes

Exhaust coolant temperature sensor malfunction
Broken or corroded sensor wiring harness
Poor contact in sensor connectors
Malfunction of the control module itself
Problems with data transmission via CAN bus

How to Fix

Check the condition of the coolant temperature sensor
Check the integrity of wires and connectors in the sensor circuit
Check for corrosion on contacts
Scan the system for other related codes
If necessary, replace the exhaust coolant temperature sensor

Related codes

U3570 U3572 P0128