P0040 Renault 1/1 And 2/1 O2 Sensor Harness Connectors Reversed
Possible causes
– 1/1 And 2/1 O2 sensors harness is open or shorted
– 1/1 And 2/1 O2 sensors circuit connectors (wrong connection)
– Faulty Powertrain Control Module (PCM)
– 1/1 And 2/1 O2 sensors circuit connectors (wrong connection)
– Faulty Powertrain Control Module (PCM)
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0040 Renault Description
At ignition on the Powertrain Control Module (PCM) checks the voltage on the ground side of the O2 sensor harness connector. If voltage is higher than two volts the P0040 Renault code will set.
Renault Vehicle:Renault Megane,Renault Clio,Renault Kangoo,Renault Laguna Coupe,Renault Master,Renault Twingo,Renault Twizy,Renault Symbol,Renault Koleos