P0057 Lexus Code - Oxygen Sensor Heater Control Circuit Low Bank 2 Sensor 2
Quick Answer
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 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
- P0057 Lexus indicates Oxygen Sensor Heater Control Circuit Low Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted, Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 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 P0057 Lexus Description
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
What are the Possible Causes of the DTC P0057 Lexus?
- Faulty Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 harness is open shorted
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit poor electrical connection
- Heated Oxygen Sensor (H2OS) Bank 2 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0057 Lexus?
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 P0057 Lexus 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 P0057 Lexus code?
Need more information on how to fix the P0057 Lexus code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0057 Lexus code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0057 Lexus Code
What does the OBDII code P0057 mean for a Lexus?
P0057 indicates a problem with the Oxygen Sensor Heater Control Circuit Low for Bank 2 Sensor 2, meaning the heater circuit is not functioning correctly.
What are the symptoms of a P0057 code in a Lexus?
Symptoms may include decreased fuel efficiency, rough idling, increased emissions, and an illuminated check engine light.
What causes the P0057 code to appear?
Common causes include a faulty oxygen sensor heater, damaged wiring or connectors, a blown fuse, or issues with the engine control module (ECM).
How can I diagnose the P0057 code in a Lexus?
Use an OBDII scanner to confirm the code, visually inspect the wiring and connectors for damage, check the fuse, and test the oxygen sensor heater circuit with a multimeter.
What does Bank 2 Sensor 2 refer to?
Bank 2 refers to the side of the engine opposite Bank 1, and Sensor 2 is the downstream oxygen sensor located after the catalytic converter.
Can I drive my Lexus with a P0057 code?
While it may be drivable, prolonged operation with this code can lead to increased emissions, reduced fuel economy, and potential damage to other components.
How do I fix the P0057 code in a Lexus?
Repair steps may include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, or replacing a blown fuse. In rare cases, the ECM may need attention.
How much does it cost to fix a P0057 code?
Repair costs can range from $150 to $400, depending on whether you need to replace the oxygen sensor or repair wiring issues.
Is a P0057 code common in Lexus vehicles?
While not the most common code, it can appear in Lexus models, especially if the oxygen sensor or wiring has deteriorated over time.
Will a P0057 code affect emissions testing?
Yes, this code can cause increased emissions, potentially leading to a failed emissions test.
Discuss the causes and fixes for P0057 Lexus OBDII Code
Code P0057 Lexus comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
