Powertrain
generic / SAE
P26A3
Engine Coolant Bypass Valve A Range/Performance
The coolant bypass valve A responds to commands but the resulting coolant temperature behaviour is not as expected. Possibly stuck partially open or contaminated bore.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / A3
Possible causes
- Valve partially stuck by sediment high
- Weak return spring fails to close fully medium
- Sensor element aged beyond calibration window low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–1000 €
- Estimated time: 1–3.5 h
- Component: coolant bypass valve a
- Component: thermostat housing
- MIL / check engine light
Sources
References
sae:J2012