Audi A4
P0128
Learn how to diagnose and replace a stuck thermostat in an Audi A4 B9. Follow our step-by-step guide to ensure a successful repair.
3 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
2 affected
Thermostatthermostat
Symptoms
10 common
- •Engine Overheating
- •Poor Cabin Heat
- •Check Engine Light
- +7 more
Most Affected Generations
3 generations
B9
1
B10
1
B8
1
Top Affected Components
2 components
thermostat
2
Thermostat
1
Severity Levels
1 level
medium
3
Quick Facts
3
Total Solutions
2
Affected Components
10
Common Symptoms
3
Generations
All Solutions
Showing 3 of 3 solutions for error code P0128 across all generations.