P2478 Ford Code - Exhaust Gas Temperature Out of Range Bank 1 Sensor 1
Quick Answer
The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 1, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 circuit poor electrical connection. 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
- P2478 Ford indicates Exhaust Gas Temperature Out of Range Bank 1 Sensor 1.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 1, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 circuit poor electrical connection.
- 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.
Code P2478 Ford Description
What are the Possible Causes of the DTC P2478 Ford?
- Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 1
- Exhaust Gas Temperature Sensor Bank 1 Sensor 1 harness is open or shorted
- Exhaust Gas Temperature Sensor Bank 1 Sensor 1 circuit poor electrical connection
- Exhaust leaks
- Excessive particulate matter buildup on sensor
How to Fix the DTC P2478 Ford?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2478 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P2478 Ford Code
1. What are the common symptoms of OBDII code P2478 in a Ford vehicle?
- Common symptoms include decreased engine performance, increased fuel consumption, rough idling, and the illumination of the check engine light.
2. What can cause the OBDII code P2478 "Exhaust Gas Temperature Out of Range Bank 1 Sensor 1" in a Ford?
- Possible causes include a faulty exhaust gas temperature sensor, wiring issues, exhaust leaks, or a malfunctioning engine control module (ECM).
3. How can I diagnose the OBDII code P2478 in my Ford vehicle?
- Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the exhaust gas temperature sensor and related wiring, and checking for exhaust leaks or other issues.
4. Is it safe to continue driving with the OBDII code P2478 illuminated in a Ford?
- It is not recommended to drive for an extended period with this code active, as it can lead to potential engine damage and decreased fuel efficiency.
5. What are the repair options for fixing the OBDII code P2478 in a Ford?
- Repair options include replacing the exhaust gas temperature sensor, repairing any wiring issues, fixing exhaust leaks, or reprogramming the engine control module (ECM).
6. Can a DIY enthusiast fix the OBDII code P2478 in a Ford at home?
- Depending on the root cause, some DIY enthusiasts may be able to fix this issue at home by replacing the sensor or repairing wiring themselves. However, more complex repairs may require professional assistance.
7. How much does it typically cost to repair the OBDII code P2478 in a Ford?
- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $500 for parts and labor.
8. What other codes may be related to the OBDII code P2478 in a Ford?
- Related codes may include P2479 (Exhaust Gas Temperature Out of Range Bank 1 Sensor 2) or other codes indicating issues with the exhaust system or engine performance.
9. How often does the OBDII code P2478 occur in Ford vehicles?
- This code is relatively uncommon but can occur in Ford vehicles with exhaust gas temperature sensor or related system issues.
10. Can resetting the check engine light clear the OBDII code P2478 in a Ford?
- Resetting the check engine light may temporarily clear the code, but it is recommended to diagnose and address the underlying issue to prevent it from reoccurring.
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