Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor that helps control how much exhaust gas is reused by the engine. It's like a sensor that helps the car breathe better, and it's not working right.
The P046E code indicates a problem with the EGR (Exhaust Gas Recirculation) Sensor B circuit, which is not performing within the expected range.
The EGR system reduces nitrogen oxide emissions by recirculating a portion of the exhaust gases back into the engine cylinders. The EGR Sensor B monitors the position of the EGR valve and reports it to the engine control module (ECM). If the sensor's signal is outside the expected range, the ECM triggers the P046E code.
• Check Engine Light is on
• Poor engine performance
• Rough idling
• Increased fuel consumption
• Failed emissions test
• Faulty EGR sensor
• Wiring issues such as open or short circuits
• Faulty EGR valve
• Carbon buildup in the EGR system
• Faulty ECM
EGR: Exhaust Gas Recirculation
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the EGR sensor and its wiring for damage.
• Check the EGR valve for proper operation.
• Test the EGR sensor with a multimeter.
• Inspect for carbon buildup in the EGR system.
• Replace the faulty EGR sensor.
• Repair or replace damaged wiring or connectors.
• Clean or replace the EGR valve.
• Remove carbon buildup from the EGR system.
• Replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 to $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance of the EGR system.
• Use quality fuel to reduce carbon buildup.
• Regularly inspect and clean the EGR valve.
Sensor Issue
• Address the issue promptly to avoid further engine problems.
• Consult a professional mechanic if unsure about the repair.
• Regularly maintain the vehicle to prevent such issues.
Check with the vehicle manufacturer for specific warranty coverage on emissions-related components.
The P046E code has been reported in vehicles with higher mileage and is often associated with carbon buildup in the EGR system.
Moderate – While the vehicle may still be drivable, it can lead to increased emissions and reduced performance if not addressed.
Driving with a malfunctioning EGR system can lead to increased emissions, which may not comply with environmental regulations.
• Engine at operating temperature
• Vehicle in closed-loop operation
The EGR sensor is typically located near the EGR valve, which is often found on or near the intake manifold.
Q: Can I drive with a P046E code?
A: It's possible to drive with this code, but it may lead to poor performance and increased emissions. It's best to fix it soon.
Q: How can I prevent the P046E code?
A: Regular maintenance and using quality fuel can help prevent carbon buildup in the EGR system.
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