P046E Code - Exhaust Gas Recirculation Sensor 'B' Circuit Range/Performance
Quick Answer
The P046E diagnostic trouble code indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'B' circuit. Common causes include Faulty EGR sensor 'B', Wiring issues in the sensor circuit, Vacuum leak in the EGR system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P046E indicates Exhaust Gas Recirculation Sensor 'B' Circuit Range/Performance.
- Common causes
- Common causes include Faulty EGR sensor 'B', Wiring issues in the sensor circuit, Vacuum leak in the EGR system.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P046E Description
The P046E diagnostic trouble code indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'B' circuit. The EGR system is responsible for recirculating a portion of the exhaust gases back into the engine cylinders to reduce emissions and control combustion temperatures. The sensor 'B' is used to monitor the EGR system's performance and ensure that the correct amount of exhaust gases is being recirculated.
Common Causes of P046E
- Faulty EGR sensor 'B'
- Wiring issues in the sensor circuit
- Vacuum leak in the EGR system
- Malfunctioning EGR valve
Symptoms of P046E
- Rough idling
- Poor acceleration
- Decreased fuel efficiency
- Potential stalling
- Failed emissions test
How to Fix P046E
- Begin by diagnosing the specific cause of the P046E code using a diagnostic scanner to read the code and pinpoint the issue.
- Inspect the EGR sensor 'B' and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
- Check for vacuum leaks in the EGR system and repair any leaks found.
- Test the EGR valve to ensure it is functioning properly. Replace the valve if it is faulty.
- Clear the code from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P046E
The typical repair costs for addressing the P046E code can vary depending on the specific cause of the issue. In general, replacing the EGR sensor 'B' can range from $100 to $200, while repairing wiring issues or vacuum leaks may cost between $150 to $300. Replacing the EGR valve can be more expensive, with costs ranging from $200 to $500.
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Code P046E Information for Specific Makes
- P046E Chevrolet — Exhaust Gas Recirculation Sensor 'B' Circuit Range/Performance
- P046E GMC — Exhaust Gas Recirculation Sensor 'B' Circuit Range/Performance
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