HomeP0408 · Code meaning and manufacturer information
Powertrain

P0408

Code meaning and manufacturer information

P0408

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer communications

4

Original wording in English

JEEP, RAM

Reported code forms P0408

Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set

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9004343

JEEP, RAM

Reported code forms P0408

VALVE, HIGH PRESSURE EGR If you are replacing the high pressure EGR valve (68490212A$) due to DTC P0407 or P0408 please refer to all published service information regarding proper diagnosis before proceeding. These DTCs…

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S2025000005

DODGE, JEEP, RAM

Reported code forms P0408

Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set

Read communication ↗

S2025000005

JEEP, RAM

Reported code forms P0408

Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes P0407 ? EGR Sensor B Circuit Low, or P0408 ? EGR Sensor B Circuit High Set

Read communication ↗

Check vehicle applicability

24

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
JeepWRANGLER2023
JeepWRANGLER2022
JeepWRANGLER2021
JeepWRANGLER2020
JeepWRANGLER2019
JeepWRANGLER2018
JeepWRANGLER2017
JeepWRANGLER2016
JeepWRANGLER2015
JeepWRANGLER2014
JeepWRANGLER2013
JeepWRANGLER2012
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Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.