What is the oxygen sensor on a Toyota p0138?
P0138 Toyota Description The Heated Oxygen Sensor2 (HO2S) (Rear O2 Sensor), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio.
What should I do if my O2 sensor is not switching?
Using a scan tool, determine if the Bank 1, sensor 1 is switching properly. It should switch rapidly between rich and lean, evenly. 1. If it does, the problem is likely intermittent and you should examine the wiring for any visible damage. Then perform a wiggle test by manipulating the connector and wiring while watching the o2 sensor voltage.
Which is p0130 O2 sensor Bank 1 sensor 1?
P0141 – O2 sensor bank 1 sensor 2 P0400 – exhaust gas recirculation flow EGR P0443 – evaporarive emission control system purge control valve circut Also i had p0130 o2 sensor bank 1 sensor 1 which i changed it i hoped that will clear some of these codes but didn’t work i still have the codes above…..
How many O2 sensors are in a car?
If a vehicle being serviced is not covered in the charts, inspect the exhaust system in the general locations to find the applicable O2 sensors. NOTE: If equipped with dual exhaust systems, there may be up to 4 or 5 O2 sensors in the exhaust system. Be sure to locate all of them before commencing with any testing or service.
P0138 TOYOTA | Oxygen Sensor Circuit High Voltage Bank 1 Sensor 2 | The Heated Oxygen Sensor 2 (HO2S) (Rear O2 Sensor), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For
What does the p0138 code on the ECM mean?
The P0138 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively high for an extended period of time.
What does the p0138 code mean on a Chrysler?
The P0138 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively high for an extended period of time. The Heated Oxygen Sensor 2 (HO2S) (Rear O2 Sensor), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank.
What causes a p0138 engine light to come on?
P0138 TOYOTA 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