What causes the p0138 code on a Dodge Ram?

Here are the most common issues that cause the P0138 code in the Dodge Ram. 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.

When is the p0138 O2 sensor code detected?

Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes care of the problem. What does this mean? When is the code detected? 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 is the OBDII code on a Dodge Ram?

P0138 is a common OBDII code that occurs in many vehicles, including the Dodge Ram. 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 is the oxygen sensor code on a Dodge Ram?

Dodge Ram P0138: Oxygen Sensor High Voltage (Bank 1 -Sensor 2) P0138 is a common OBDII code that occurs in many vehicles, including theDodge Ram. The code is triggered when: There are also some less likely problems that can cause P0138.

What is the high voltage code on a Dodge Ram?

Dodge Ram P0138: Oxygen Sensor High Voltage (Bank 1 -Sensor 2) February 8, 2019 by Jason. P0138 is a common OBDII code that occurs in many vehicles, including the Dodge Ram. The code is triggered when: The voltage at the sensor remains above threshold for 20 seconds or more. Voltage to the sensor is to high (wiring problem, think short)

What causes a p0138 error code on an oxygen sensor?

Although the P0138 code often appears due to a worn-out oxygen sensor, it’s not the only condition that can trigger this error. This diagnostic code can also appear when any of the related components fail. That’s why, apart from knowing the symptoms to watch out for, it is also a good idea to know what causes a P0138 error code.

What does the DTC code p0138 stand for?

Diagnostic trouble code (DTC) P0138 stands for O2 Sensor Circuit High Voltage (Bank 1, Sensor 2). The code will set when your car’s primary computer—also called the powertrain control module (PCM)—detects that, for a given period of time, the voltage signal from the rear O2 sensor is too high.

What causes engine code p0138-oxygen sensor voltage?

Once the oxygen sensor stops performing as intended, the vehicle computer detects that and turns on the Check Engine light. This will usually have a diagnostic trouble code (DTC) of P0138. Typically, you’d take the vehicle into the shop, where they’d diagnose the issue and replace the oxygen sensor for you.

What does the code p0138 mean on the O2 sensor?

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 code p0138 on O2 sensor mean?

A code P0138 may mean that one or more of the following has happened: 1 Faulty O2 sensor 2 Short to battery voltage in O2 sensor signal circuit 3 High fuel pressure (not as likely)

What does a P0158 mean on a bank 2 sensor?

The PCM (Powertrain Control Module) then compares the post-cat reading to the pre-cat readings to determine if the catalyst is working properly. A P0158 refers to a fault at the post-cat o2 sensor on bank 2 (second sensor back on bank 2), indicating that the signal voltage is too high. The o2 sensor is a four wire sensor.

A code P0138 may mean that one or more of the following has happened: 1 Faulty O2 sensor 2 Short to battery voltage in O2 sensor signal circuit 3 High fuel pressure (not as likely)

How to test trouble code p0132 ( Dodge 3.9L 5.2L )?

Vehicles with 2 upstream oxygen sensors, a P0132 DTC is identifying the one that’s on Bank 1. Bank 1 is the bank of cylinders that have cylinders 1, 3, 5, and 7 (5.2L and 5.9L V-8 engines) and 1, 3, and 5 (3.9L V-6 engines). Vehicles with only 1 upstream oxygen sensor, a P0132 DTC is identifying the only one that’s before the catalytic converter.

Is the O2 sensor on a Dodge Dakota bad?

Bad Oxygen Sensor – The O2 sensor itself is one of the most likely reasons that P0138 is triggering your service engine soon light. Although it is a temptation to replace it right away, it wouldn’t hurt to check out the wiring harness around it beforehand.

What causes a bad O2 sensor on a Dodge Ram?

This is especially true if the mixture ends up too lean. While a rough running engine can be a sign of a bad oxygen sensor, it is often a sign of a misfire as well. Often enough, there won’t be any noticeable signs of a bad oxygen sensor. You’ll go to get an emissions check done, and your Ram fails the test.

What does the p0138 code on a car mean?

Code P0138 means that your powertrain control module (PCM) has detected that the voltage signal from the rear O2 sensor is too high. What is an Oxygen Sensor? All modern cars have at least two oxygen sensors.

Can a bad O2 sensor cause a misfire?

Without the proper air/fuel mixture, your engine won’t run as smoothly as it should. This is especially true if the mixture ends up too lean. While a rough running engine can be a sign of a bad oxygen sensor, it is often a sign of a misfire as well.

Can a bad oxygen sensor cause a check engine light to come on?

The trouble codes associated with the OBDII scan will reveal which sensor is at fault and why it is bad (at least what the computer thinks is wrong). It is very rare for there to be a problem with an oxygen sensor, and not have the check engine light come on. Here are the most common symptoms of a bad oxygen sensor in your Ram:

What does p0138 mean in a catalytic converter?

O2 Sensor Circuit High Voltage (Bank 1, Sensor 2) What Does P0138 Mean? Oxygen sensor 2 is the downstream oxygen sensor in relationship to the catalytic converter. It measures the amount of air and fuel coming out of the catalytic converter to ensure the catalytic converter is functioning properly.

What does the O2 sensor code p0152 mean?

What the P0152 code means. P0152 is the OBD-II generic code indicating that the O2 sensor for bank 2 sensor 1 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 or a short to power in the sensor circuit.

What are the possible causes of a p0152 Dodge?

P0152 DODGE Possible Causes 1 Faulty Front Heated Oxygen Sensor Bank 2 2 Intake air leaks may be faulty 3 Exhaust gas leaks 4 Front Heated Oxygen Sensor Bank 2 harness is open or shorted 5 Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection 6 Inappropriate fuel pressure 7 Faulty fuel injectors

What does the p0442 code on a Dodge OBDII mean?

The P0442 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). Loose fuel tank filler cap is the most common cause that triggers the P0442 code. Dodge EVAP Diagnosis & Repair Diagnosis Troubles Codes P0442 and P0455. User Submitted Video.

When does the p1281 code set on a Dodge Charger?

The P1281 code will set if the engine coolant temperature does not reach 181 F (83 C) while driving for more than 3 minutes and less than one hour depending on the engine load and start up temperature. Need more information on how to fix the P1281 DODGE code?

Where is the p0032 sensor on a Dodge Grand Caravan?

A P0032 DTC (diagnostic trouble code) refers to the O2 sensor (oxygen sensor) located on Bank 1 in front of the catalytic converter. There is also an oxygen sensor behind the converter which is Sensor #2. This O2 sensor #1 may also be refered to as an air/fuel ratio sensor since on some vehicles it is.

What is the engine code on a Dodge Ram 1500?

Engine Code P0441 fixed on my 2003 Dodge Ram 1500 Category Autos & Vehicles Show moreShow less Comments are turned off AutoplayWhen autoplay is enabled, a suggested video will automatically play next. Up next ERROR CODE P0441(PURGE VALVE REPLACEMENT) – Duration: 3:12. BARRICADE GARAGE49,959 views 3:12

How much does it cost to repair a p0038 Dodge?

The cost of diagnosing the P0038 DODGE 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. Most auto repair shops charge between $75 and $150 per hour. When is the code detected?

How much does it cost to repair a p0141 Dodge engine?

The cost to diagnose the P0141 DODGE 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. Most auto repair shops charge between $75 and $150 per hour.

Are there any problems with the Dodge 5.7 Hemi?

As with any engine, the 5.7L HEMI has had its share of issues over the years, many of which were never widespread enough to warrant formal recalls. Some of these problems include:

What causes the p0138 code on a Dodge Ram?