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Powertrain

P0408

Code meaning and manufacturer information

OBD-II / DTC

Reference meaning

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.

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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Manufacturer communications

4

Original wording in English

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JEEP, RAM

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

9004343 ↗

JEEP, RAM

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 are for the low pressure EGR system.

S2025000005 ↗

DODGE, JEEP, RAM

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

S2025000005 ↗

JEEP, RAM

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

Check vehicle applicability

38

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

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MakeModelModel year
DodgeRAM 1500 ↗2012
DodgeRAM 1500 ↗2011
DodgeRAM 1500 ↗2010
JeepWRANGLER ↗2023
JeepWRANGLER ↗2022
JeepWRANGLER ↗2021
JeepWRANGLER ↗2020
JeepWRANGLER ↗2019

Code meaning and manufacturer information

Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.

Exhaust Gas Recirculation Sensor B Circuit High

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.