What is engine code po138?
What the P0138 code means. P0138 is the OBD-II generic code indicating the O2 sensor for bank 1 sensor 2 fails to have a lower voltage output below 1.2 volts for more than 10 seconds indicating a lack of oxygen in the exhaust stream.
What does p0135, p0141, and p0161 mean?
Won’t pass state mandated emission testing. As mentioned at the beginning of the article, P0135, P0141, P0155, and P0161 DTCs share one specific and common thread: a Heater Circuit Malfunction. What does this mean? Before I jump into an explanation of what the codes mean I’ll share with you some basic working theory of how the O2 sensor works.
What causes the p0138 code on an engine?
What causes the P0138 code? 1 The engine control module (ECM) sees the voltage of the O2 sensor for bank 1 sensor 2 above 1.2 volts… 2 The ECM detects the voltage high problem and turns on the Check Engine Light. 3 The ECM uses other O2 sensors to try and control the fuel injection with their values.
How is the p0135 O2 sensor trouble code?
How serious is the P0135 code? 1 O2 sensors are the fuel control feedback the ECM needs to properly control the injectors. 2 The ECM stays in open loop until the O2 system is repaired or the O2 sensor starts working again. 3 The engine stuck in open loop will run extra rich and will burn more fuel and start to build carbon.
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.
What is the cause of the code p0138?
What Is the Cause of Code P0138? 1 Faulty O2 Sensor 2 Short to battery voltage in O2 sensor signal circuit 3 Corroded wiring 4 Fuel pressure too high 5 Engine coolant temperature sensor
Won’t pass state mandated emission testing. As mentioned at the beginning of the article, P0135, P0141, P0155, and P0161 DTCs share one specific and common thread: a Heater Circuit Malfunction. What does this mean? Before I jump into an explanation of what the codes mean I’ll share with you some basic working theory of how the O2 sensor works.
How serious is the P0135 code? 1 O2 sensors are the fuel control feedback the ECM needs to properly control the injectors. 2 The ECM stays in open loop until the O2 system is repaired or the O2 sensor starts working again. 3 The engine stuck in open loop will run extra rich and will burn more fuel and start to build carbon.
What causes p0141 code on oxygen sensor heater?
Faulty oxygen sensor heater (most common) Circuit problems (e.g., damaged wiring, loose connections – fairly common) Issues with the PCM (e.g., software in need of an update – very rare) A circuit problem is one of the possible causes of the P0141 code.