P0135 Lambda sensor electrical diagnosis

			Test results
1	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Oxygen sensor wiring	Check for a short circuit to Vbatt. on the oxygen sensor wiring	Go to Step 2	Presence of short circuit to Vbatt.	Restore correct insulation to battery positive
2	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Oxygen sensor wiring	Check for a short circuit to earth on the oxygen sensor wiring	Go to Step 3	Presence of short circuit to earth	Restore correct insulation to earth
3	COMPONENT CONCERNED	ELECTRICAL CONNECTION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Oxygen sensor wiring	Check for an open circuit on the oxygen sensor wiring	Go to Step 4	Presence of open circuit	Restore the correct connections
4	COMPONENT CONCERNED	OXYGEN SENSOR OPERATION CHECK	OK (NO FAULTS DETECTED)	FAULT DETECTED	OPERATION
	Oxygen sensor	Check that the oxygen sensor is working correctly by carrying out the See Test 1080BA	End of diagnosis	Oxygen sensor defective	Replace Oxygen sensor Op. 1080B90