Possible causes – Faulty HO2S Bank 1 Sensor 1– HO2S Bank 1 Sensor 1 harness is open or shorted– HO2S Bank 1 Sensor 1 circuit poor electrical connection When is the obd code mean? The P1134 is sets if the Powertrain Control Module (PCM) detects the HO2S ratio is not within range. Symptoms – Engine…