AutoCodes – Ford – P0548 Ford

P0548 Ford Code - Exhaust Gas Temperature Sensor Circuit Low Bank 2 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 2 Sensor 1, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 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: P0548 Ford indicates Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1, Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 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.

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Code Popularity 2,444

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0548 Ford Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P0548 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

OBDII Code P0548 Ford - Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1 - AutoCodes.com — P0548 Ford Code - Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0548 Ford?

Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 1
Exhaust Gas Temperature Sensor Bank 2 Sensor 1 harness is open or shorted
Exhaust Gas Temperature Sensor Bank 2 Sensor 1 circuit poor electrical connection
Exhaust leaks
Excessive particulate matter buildup on sensor

How to Fix the DTC P0548 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 P0548 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.

Need more information about the P0548 Ford code?

Need more information on how to fix the P0548 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0548 Ford code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0548 Ford Code

1. What are the common symptoms of OBDII code P0548 in a Ford vehicle?

The common symptoms of OBDII code P0548 in a Ford vehicle include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P0548 Ford indicate?

OBDII code P0548 in a Ford vehicle indicates a problem with the Exhaust Gas Temperature (EGT) Sensor Circuit Low for Bank 2 Sensor 1.

3. What are the possible causes of OBDII code P0548 Ford?

Possible causes of OBDII code P0548 in a Ford vehicle include a faulty EGT sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).

4. How can I diagnose the OBDII code P0548 in my Ford vehicle?

Diagnosing OBDII code P0548 in a Ford vehicle involves checking the EGT sensor for proper operation, inspecting the sensor wiring for damage, and testing the ECM for any faults using a diagnostic scanner.

5. Can I continue driving my Ford vehicle with OBDII code P0548?

It is not recommended to drive your Ford vehicle with OBDII code P0548, as it can lead to potential engine damage and further issues if left unaddressed.

6. How can I repair OBDII code P0548 in my Ford vehicle?

Repairing OBDII code P0548 in a Ford vehicle may involve replacing the faulty EGT sensor, repairing any damaged wiring or connectors, and resetting the fault codes using a diagnostic scanner.

7. Is it possible to reset OBDII code P0548 in a Ford vehicle without fixing the underlying issue?

While you can clear the fault code temporarily, it is essential to address the root cause of OBDII code P0548 in your Ford vehicle to prevent the issue from reoccurring.

8. Can a DIY enthusiast fix OBDII code P0548 in a Ford vehicle?

Depending on your experience and knowledge, a DIY enthusiast may be able to fix OBDII code P0548 in a Ford vehicle by following the repair steps outlined in the vehicle's service manual.

9. How much does it cost to repair OBDII code P0548 in a Ford vehicle at a professional mechanic?

The cost to repair OBDII code P0548 in a Ford vehicle at a professional mechanic can vary depending on the specific cause of the issue, but it may range from $150 to $400 or more, including parts and labor.

10. How often does OBDII code P0548 Ford occur in Ford vehicles?

OBDII code P0548 in Ford vehicles is relatively uncommon but can occur due to sensor failures, wiring issues, or ECM malfunctions. Regular maintenance and inspections can help prevent this code from appearing.