ShopBaseComplete shop management for auto repair shops · $249/mo
Try ShopBase →
Home/DTC Codes/Volkswagen/e-Golf/2016-2016 Electric/P0128
P0128

Coolant Thermostat Below Regulating Temperature

2016-2016 Volkswagen e-Golf Electric 🇨🇦

Low SeverityPowertrain

Description

The engine coolant has not reached the expected temperature within a specified time after startup.

Symptoms

  • Check Engine Light
  • Poor fuel economy
  • Heater not getting hot
  • Engine running cool

Common Causes

  • Stuck-open thermostat
  • Missing thermostat
  • Faulty ECT sensor
  • Cooling fan stuck on

Diagnostic Steps

  1. Monitor ECT warmup curve
  2. Check thermostat
  3. Verify fan operation
  4. Test ECT sensor

Repair Notes

Replace thermostat.

Related Codes

P0115Engine Coolant Temperature (ECT) Sensor 1 CircuitP0116ECT Sensor 1 Circuit Range/PerformanceP0125Insufficient Coolant Temperature for Closed Loop Fuel Control

Other Powertrain Codes

P0128 on Other Vehicles

Volkswagen Amarok BR

2010-2010 2.0L I4 TDI Diesel

Volkswagen Amarok BR

2011-2011 2.0L I4 TDI Diesel

Volkswagen Amarok BR

2012-2012 2.0L I4 TDI Diesel

Volkswagen Amarok BR

2013-2013 2.0L I4 TDI Diesel

Volkswagen Amarok BR

2014-2014 2.0L I4 TDI Diesel

Volkswagen Amarok BR

2015-2015 2.0L I4 TDI Diesel

Volkswagen Amarok BR

2016-2016 2.0L I4 TDI Diesel

Volkswagen Amarok BR

2017-2017 2.0L I4 TDI Diesel

Common Questions

What does code P0128 mean on a 2016-2016 Volkswagen e-Golf?

P0128 stands for "Coolant Thermostat Below Regulating Temperature". The engine coolant has not reached the expected temperature within a specified time after startup.

What are the symptoms of P0128 on a Volkswagen e-Golf?

Common symptoms of P0128 include: Check Engine Light, Poor fuel economy, Heater not getting hot, Engine running cool.

What causes P0128 on a 2016-2016 Volkswagen e-Golf?

Common causes of P0128 include: Stuck-open thermostat, Missing thermostat, Faulty ECT sensor, Cooling fan stuck on.

View Labor Times | View Torque Specs | View Fluid Specs