How does the ho2s work on a Honda?
The Engine Control Module ( ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean.
What causes the ho2s output voltage to change?
The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module ( ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas.
What causes a Honda ho2s bank to malfunction?
P0138 HONDA Possible Causes 1 Faulty Rear Heated Oxygen Sensor Bank 1 2 Rear Heated Oxygen Sensor Bank 1 harness is open or shorted 3 Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection 4 Intake air leaks 5 Exhaust gas leaks 6 Inappropriate fuel pressure 7 Faulty fuel injectors
What is the diagnostic code for O2 sensor circuit high voltage?
P0138 is a diagnostic trouble code (DTC) for “O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
The Engine Control Module ( ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean.
The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module ( ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas.
When is the p0139 code detected Honda ho2s bank?
Most auto repair shops charge between $75 and $150 per hour. When is the code detected? The P0139 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor takes more time to respond between rich and lean than the specified time.
P0138 HONDA Possible Causes 1 Faulty Rear Heated Oxygen Sensor Bank 1 2 Rear Heated Oxygen Sensor Bank 1 harness is open or shorted 3 Rear Heated Oxygen Sensor Bank 1 circuit poor electrical connection 4 Intake air leaks 5 Exhaust gas leaks 6 Inappropriate fuel pressure 7 Faulty fuel injectors