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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - DTCS P2237-00 To P2AE1-00 >> DTC Troubleshooting >> P26A3-00-Engine Coolant Bypass Valve "A" Range/Performance >> Possible Causes

Possible Causes

Possible Causes
COOLANT BYPASS VALVE GROUND CIRCUIT FOR A PARTIAL SHORT TO GROUND
COOLANT BYPASS VALVE
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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