Operation CHARM: Car repair manuals for everyone.
Home >> Volvo >> 1986 >> 240 L4-2.3L SOHC VIN 88 B230F >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Oxygen Sensor Feedback System >> Malfunction Tests >> Malfunction Test 8

Malfunction Test 8


1. If CO reading does not drop when connecting electrical connector at oxygen sensor, replace frequency valve.
2. Perform ``System Test.''



pro multis · About Operation CHARM