P0407
Exhaust Gas Recirculation Sensor B Circuit Low
DTC P0407, sometimes indicated as P040700 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the auxiliary emissions system causing exhaust gas recirculation sensor b circuit low.
The exhaust gas recirculation (EGR) sensor measures the amount of exhaust gas recirculated into the engine. The P0407 code means that the sensor detected a low exhaust gas recirculation rate.
This code can be caused by a defective EGR sensor, a defective EGR valve, or a plugged EGR valve or exhaust pipe.
If the P0407 code is caused by a defective EGR sensor, the sensor will need to be replaced.
If the P0407 code is caused by a defective EGR valve, the valve will need to be replaced.
If the P0407 code is caused by a plugged EGR valve or exhaust pipe, the obstruction will need to be cleared.
- P0407: Exhaust Gas Recirculation Sensor B Circuit Low
- P0407: Exhaust Gas Recirculation Sensor "B" Circuit Low
- P0407: EGR Flow Sensor B Circuit Low Input
- P0407: Exhaust gas recirculation (EGR) valve position sensor B – low input
- P0407 00: Exhaust gas recirculation sensor "A" - break or short circuit to ground
- P0407 00: Exhaust gas recirculation (EGR) valve position sensor B - low input
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- S2025000005 - ELECTRICAL SYSTEM
JEEP: Malfunction indicator lamp (mil) illumination. Diagnostic trouble codes P0407 ? Egr sensor b circuit low, or P0408 ? Egr sensor b circuit high set - S2025000005 Rev. - EXTERIOR LIGHTING
JEEP: Malfunction indicator lamp (mil) illumination. Diagnostic trouble codes P0407 ? Egr sensor b circuit low, or P0408 ? Egr sensor b circuit high set - 9004343 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
JEEP: Valve, high pressure egr if you are replacing the high pressure egr valve (68490212a$) due to dtc P0407 or P0408 please refer to all published service information regarding proper diagnosis before proceeding. These dtcs are for the low pre - S2025000005 Rev. - ELECTRICAL SYSTEM
JEEP: Malfunction indicator lamp (mil) illumination. Diagnostic trouble codes P0407 ? Egr sensor b circuit low, or P0408 ? Egr sensor b circuit high set - 9004343 - SERVICE BRAKES, HYDRAULIC
JEEP: Valve, high pressure egr if you are replacing the high pressure egr valve (68490212a$) due to dtc P0407 or P0408 please refer to all published service information regarding proper diagnosis before proceeding. These dtcs are for the low pre - S2025000005 - ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
JEEP: Malfunction indicator lamp (mil) illumination. Diagnostic trouble codes P0407 ? Egr sensor b circuit low, or P0408 ? Egr sensor b circuit high set