P1133 Acura HO2S Heater Circuit- Bank 1 & 2 Sensor 1 Electrical Malfunction
Possible causes
– Faulty O2 Sensor
– O2 Sensor harness is open or shorted
– O2 Sensor circuit poor electrical connection
– O2 Sensor harness is open or shorted
– O2 Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1133 Acura Description
A Heated Exhaust Oxygen (HO2S) sensor indicating rich at the end of a test is trying to correct for an over-lean condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
Acura Vehicle:
Acura ILX, Acura MDX, Acura RDX, Acura RLX, Acura TL, Acura TSX, Acura ZDX, Acura CSX, Acura EL, Acura Integra, Acura RSX, Acura Legend, Acura Vigor, Acura CL, Acura SLX, Acura NSX, Acura RL, Acura ZDX