P049B
Exhaust Gas Recirculation B Flow Insufficient Detected
Generic code
Auxiliary Emissions Control
Medium severity
Moderate repair
Free on OBD DashX
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What P049B means
- Too low exhaust gas flowing through EGR (Exhaust Gas Recirculation) valve
Possible symptoms
- Engine idle problems
- Transmission slippage or over-heating
- The engine may display signs of in the form of knocking.
Possible causes
- Restriction in the Exhaust Gas Recirculation (EGR) passages, usually caused by carbon buildup
- The EGR Valve is defective
- Lack of proper vacuum or electrical signal to the EGR valve
- Malfunctioning EGR Vacuum supply solenoid
- Lack of proper EGR system feedback to the computer
Related parts
- Exhaust Gas Recirculation (EGR): Exhaust gas recirculation (EGR) is an emissions reduction technique used in petrol and diesel engines. Problems lead to harmful emissions out of limit
Possible solutions
- If you do not hear the Air Pump Motor start, then check the SAS Air Pump and relay.
- If you hear the motor, inspect the components that control the Air delivery such as the Check Valve Solenoid, then check Valve and the rubber hoses, metal piping and passages.
- Inspect for damaged or disconnected hoses around the Eva purge solenoid
- Check and/or replace the sensor
Free on OBD DashX
P049B on OBD DashX
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