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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (Electronic Control Module (ECM) Diagnostic Trouble Codes - 1 Of 3 (644 Body)) >> ECM-28: Front Heated Oxygen Sensor (Ho2S) Short-Term Fuel Trim. Faulty Signal. Intermittent Fault (B4204T2 CVVT; 2000) >> Faulty signal >> Verification >> Erasing diagnostic trouble codes (DTCs)

Erasing diagnostic trouble codes (DTCs)

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.
NOTE:

All diagnostic trouble codes (DTCs) in the control module will be erased and the status for diagnostic functions will be "NOT READY".

Fig 1: Identifying Ignition ON
GLL101051Courtesy of VOLVO CARS OF NORTH AMERICA.