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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (Electronic Control Module (ECM) Diagnostic Trouble Codes - 3 Of 3 (644 Body)) >> ECM-Ac: Boost Pressure Sensor. Signal Too Low. Permanent Fault (B4204T3; 2004) >> Signal too low. Permanent fault >> Checking the wiring and component

Checking the wiring and component

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Check the signal cable between control module terminal #72 and connector terminal #3 on boost pressure sensor 1. Check for an open-circuit according to Open-circuit, permanent faults . Check for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Check the power supply cable between connector terminal #2 on boost pressure sensor 1 and control module terminal #74. Check for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Try a new boost pressure sensor 1 if no fault is found during the above fault-tracing.

Other information 

Fig 1: Identifying Boost Pressure Sensor Connector Terminals
GLL112403Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying EMS2000
GLL111998Courtesy of VOLVO CARS OF NORTH AMERICA.