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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (2.9L Pcm 1 - DTCS B1800-00 To P0117-00) >> DTC Troubleshooting >> P0039-00-Turbocharger/Supercharger Bypass Valve 1 Control Circuit Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
TURBOCHARGER SURGE VALVE 1 CONTROL CIRCUIT PARTIALLY SHORTED TO GROUND
TURBOCHARGER SURGE VALVE 1
POWERTRAIN CONTROL MODULE 1 (PCM-1)

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

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