P1134 HONDA Possible Causes
What does this mean?
- Faulty Heated Oxygen Sensor (HO2S), Bank 1 Sensor 1
- Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 harness is open or shorted
- Heated Oxygen Sensor (HO2S), Bank 1, Sensor 1 circuit, poor electrical connection
- Air leak in exhaust near O2 sensor
How to Fix Code P1134 HONDA?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
When is the code detected?
If the Powertrain Control Module (PCM) determines that the front HO2S has not switched enough times, the PCM will set code P1133.
Possible Symptoms
- Check Engine Light on (or service engine soon warning light)
P1134 HONDA Meaning
The Engine Control Module (ECM) monitors the Heated Oxygen Sensor (HO2S) activity for 90 seconds after closed loop operation begins. The ECM determines if the front HO2S is operating properly by counting the number of HO2S-1 Lean/Rich (L/R) and Rich/Lean (R/L) switches.