P2477 Code - Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4
Quick Answer
The P2477 diagnostic trouble code refers to an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit on Bank 2 Sensor 4. Common causes include Faulty EGT sensor, Wiring issues in the EGT sensor circuit, ECM malfunction. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P2477 indicates Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4.
- Common causes
- Common causes include Faulty EGT sensor, Wiring issues in the EGT sensor circuit, ECM malfunction.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code P2477 Description
The P2477 diagnostic trouble code refers to an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit on Bank 2 Sensor 4. This sensor is responsible for monitoring the temperature of the exhaust gases leaving the engine. An intermittent or erratic signal from this sensor can lead to various performance issues in the vehicle.
Common Causes of P2477
- Faulty EGT sensor
- Wiring issues in the EGT sensor circuit
- ECM malfunction
- Exhaust system leaks
- Corrosion or damage to sensor connectors
Symptoms of P2477
- Decreased fuel efficiency
- Rough idling
- Hesitation during acceleration
- Stalling
- Check Engine Light illuminated
How to Fix P2477
- Use a diagnostic scanner to retrieve the trouble code and pinpoint the issue with Bank 2 Sensor 4.
- Inspect the wiring and connectors for any damage or corrosion. Repair or replace as needed.
- Test the EGT sensor for proper operation. Replace if faulty.
- Clear the trouble code from the ECM and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnostic testing may be required to identify any underlying issues with the ECM or exhaust system components.
Cost to Fix P2477
The typical repair costs for addressing the P2477 code can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops may offer more competitive pricing.
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Code P2477 Information for Specific Makes
- P2477 Chevrolet — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4
- P2477 Dodge — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4
- P2477 Ford — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4
- P2477 GMC — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 2 Sensor 4
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