What does the p0138 Jeep O2 sensor 2 mean?
P0138 JEEP Meaning 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 optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio.
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 is the OBDII code on a Jeep Cherokee?
P0138 is a common OBDII code that occurs in many vehicles, including the Jeep Cherokee. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more There are also some less likely problems that can cause P0138. We’ll go over those below. Here’s a pretty helpful video from AutoEclinic on diagnosing the code:
How can I tell if my Cherokee has an oxygen sensor?
It is possible to diagnose the P0138 with a multimeter. If you use the multimeter, you’ll know whether or not the voltage coming to and from the oxygen sensor is within spec, this can help you determine if it’s your Cherokee’s O2 sensor, or wiring harness that’s the issue.
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.
P0138 is a common OBDII code that occurs in many vehicles, including the Jeep Cherokee. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more There are also some less likely problems that can cause P0138. We’ll go over those below. Here’s a pretty helpful video from AutoEclinic on diagnosing the code:
What causes a P0158 code on an O2 sensor?
Potential causes of an P0158 code include: Bad o2 sensor (Bank 2 Sensor 2) Wiring in contact with exhaust components Engine running rich (If other codes are present) Holes in exhaust causing PCM to over-rich engine resulting in an abnormally high Bank 2, sensor 2 reading Short to voltage on signal circuit Bad PCM
What does P0300 mean on a Jeep engine?
Jeep code P0300 indicates that one or more cylinders are experiencing misfires. A misfire occurs when an insufficient amount of fuel is burning in a cylinder. The efficient burning of fuel is essential to engine operation as the combustion of fuel is what provides the energy to power the engine in your Jeep.
What are the potential causes of p0108 code?
Potential causes of a P0108 code: Bad MAP sensor. Leak in vacuum supply line to MAP sensor. Engine vacuum leak. Short on signal wire to PCM. Short on reference voltage wire from PCM.
What does p0108 stand for on a Buick Century?
P0340 tps high voltage P0118 engine coolant sensor high voltage P0108 map high voltage P0351 coil primary circuit (no idea what that means..) P0113 IAT high volt… codes P0122 & P0108 on a 98 buick century with a 3.1.
Potential causes of a P0108 code: Bad MAP sensor. Leak in vacuum supply line to MAP sensor. Engine vacuum leak. Short on signal wire to PCM. Short on reference voltage wire from PCM.
What causes low vacuum in a p0108 manifold?
Potential causes of a P0108 code: Bad MAP sensor. Leak in vacuum supply line to MAP sensor. Engine vacuum leak. Short on signal wire to PCM. Short on reference voltage wire from PCM. Open in ground circuit to MAP. Worn engine causing low vacuum.
P0340 tps high voltage P0118 engine coolant sensor high voltage P0108 map high voltage P0351 coil primary circuit (no idea what that means..) P0113 IAT high volt… codes P0122 & P0108 on a 98 buick century with a 3.1.
What causes service engine soon light on Jeep Cherokee?
Here are the most common issues that cause the P0138 code in the Jeep Cherokee. They are presented in order (somewhat) of most to least likely to cause the problem. Bad Oxygen Sensor – The O2 sensor itself is one of the most likely reasons that P0138 is triggering your service engine soon light.
What to do if your Jeep has a p0138 code?
Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes care of the problem. The cost to diagnose the P0138 JEEP code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type.
Here are the most common issues that cause the P0138 code in the Jeep Cherokee. They are presented in order (somewhat) of most to least likely to cause the problem. Bad Oxygen Sensor – The O2 sensor itself is one of the most likely reasons that P0138 is triggering your service engine soon light.
It is possible to diagnose the P0138 with a multimeter. If you use the multimeter, you’ll know whether or not the voltage coming to and from the oxygen sensor is within spec, this can help you determine if it’s your Cherokee’s O2 sensor, or wiring harness that’s the issue.