How do I fix code P2238?
What repairs can fix the P2238 code?
- Replace the O2 sensor for an short circuit in the heater circuit.
- Repair the wiring connector or wiring to the O2 sensor for shorts.
- Replace the power relay for the heater circuit due to a burned out or shorted circuit that the pinpoint test indicated.
Is O2 sensor the same as air fuel sensor?
An air/fuel sensor can read a much wider and leaner range of fuel mixtures than a conventional O2 sensor. That’s why they’re also called “wideband” O2 sensors. Another difference is that A/F sensors don’t produce a voltage signal that suddenly changes on either side of Lambda when the air/fuel goes rich or lean.
What causes an air fuel sensor to go bad?
Problems with air fuel ratio sensors are common. Often a sensor gets contaminated or simply fails. In some cars, the heating element inside the sensor fails causing the malfunction. For example, in many Toyota and Honda cars the code P0135 may be caused by a failed heating element inside the sensor.
What does the O2 sensor code p2238 mean?
Code P2238 is a code indicating the O2 sensor heater circuit is shorted causing the circuit voltage control to be low. This will cause the fuel feedback control to not work and the ECM to put the engine into failure mode or open loop fuel control. This will also cause the vehicle to fail emissions testing.
What are the possible causes of a p2238 Toyota?
P2238 TOYOTA Possible Causes 1 Faulty EFI Relay 2 Faulty Air/Fuel Sensor Bank 1 3 Air/Fuel Sensor Bank 1 harness is open or shorted 4 Air/Fuel Sensor Bank 1 circuit poor electrical connection 5 Faulty Engine Control Module (ECM)
Which is p2238 sensor positive current control circuit low bank 1?
So the codes that ive been getting is p2238 (current control circuit low bank 1 sensor 1) and p2241 (pumping current circuit low (for a/f sonsor) bank 2 sensor 1) and so ive replaced the o2 sensors like this wiki said and there doesnt seem to be anything wrong with the electrical and the engine runs…
What does stored code p2238 in PCM mean?
A stored code P2238 means that the powertrain control module (PCM) has detected a positive current discrepancy in the upstream oxygen (O2) sensor for engine bank number one. Bank one is the engine bank that contains the number one cylinder.