The control module judged the Engine Coolant Bypass Valve B Position signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.
TuningBot DTC Database · v4.37.14
P2AA8 Engine Coolant Bypass Valve B Position Sensor Circuit Range/Performance
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P2AA8 means
Related and nearby codes
How to read P2AA8
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P2AA8
What does P2AA8 mean?
Engine Coolant Bypass Valve B Position Sensor Circuit Range/Performance. The control module judged the Engine Coolant Bypass Valve B Position signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.
Is P2AA8 generic or manufacturer-specific?
P2AA8 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2AA8 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
