P046D
Exhaust Gas Recirculation Sensor A Circuit Intermittent/Erratic
Generic code
Auxiliary Emissions Control
Medium severity
Moderate repair
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What P046D means
- Improper voltage signal is sent through the Exhaust Gas valve
Possible symptoms
- In some cases, there may be performance problems, such as pinging on acceleration, when the engine is under load or when driving the vehicle at higher speeds
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) Temperature Sensor: Exhaust gas recirculation (EGR) is an emissions reduction technique used in petrol and diesel engines. EGR Temperature sensor monitors the temperature in the emission system. This car's malfunctioning sensor will lead to higher emissions & lower performance
Possible solutions
- Before replacing any parts try cleaning the EGR valve, tube and passages.
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