P0055 Code - HO2S Heater Resistance Bank 1 Sensor 3
Quick Answer
The Heated Oxygen Sensor (HO2S) must reach the operating temperature to provide an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 3, Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 3 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
- P0055 indicates HO2S Heater Resistance Bank 1 Sensor 3.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor Bank 1 Sensor 3, Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted, Heated Oxygen Sensor Bank 1 Sensor 3 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 P0055 Description
What are the Possible Causes of the DTC P0055?
- Faulty Heated Oxygen Sensor Bank 1 Sensor 3
- Heated Oxygen Sensor Bank 1 Sensor 3 harness is open or shorted
- Heated Oxygen Sensor Bank 1 Sensor 3 circuit poor electrical connection
How to Fix the DTC P0055?
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 P0055 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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Information for Specific Makes
- P0055 Ford — HO2S Heater Resistance Bank 1 Sensor 3
Frequently Asked Questions about P0055 Code
What does OBDII code P0055 mean?
Code P0055 indicates an issue with the heater resistance in the oxygen sensor (HO2S) for Bank 1 Sensor 3, typically used to measure exhaust gases downstream from the catalytic converter.
What are the symptoms of code P0055?
Common symptoms include a check engine light, poor fuel efficiency, increased emissions, and in rare cases, reduced engine performance.
What causes OBDII code P0055?
Causes may include a faulty oxygen sensor heater, damaged wiring or connectors, an open circuit, or excessive resistance in the heater element of the sensor.
Can you drive with a P0055 code?
While the vehicle may still be drivable, it's not recommended to ignore the code as it can lead to increased emissions and reduced engine efficiency over time.
How do you diagnose code P0055?
Diagnosis involves checking the oxygen sensor's heater resistance, inspecting wiring and connectors for damage, and using a multimeter to test for proper circuit continuity.
How is code P0055 fixed?
Repairs may involve replacing the Bank 1 Sensor 3 oxygen sensor, repairing damaged wiring, or addressing issues with the ECM if it is not properly controlling the heater circuit.
How much does it cost to fix a P0055 code?
The cost varies depending on the root cause, but oxygen sensor replacement typically ranges from $100 to $300, including parts and labor.
Can a faulty ECM cause code P0055?
While rare, a malfunctioning ECM can fail to control the heater circuit properly, leading to this code.
What tools are needed to fix code P0055?
Basic repair tools include an OBDII scanner, multimeter, and possibly a wrench or socket set for removing the oxygen sensor.
Is a P0055 code related to emissions?
Yes, a malfunctioning oxygen sensor heater can affect the sensor's ability to monitor exhaust gases accurately, potentially increasing emissions.
Discuss the causes and fixes for P0055 OBDII Code
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