P0057
Fix within 1-2 weeksThe oxygen sensor heater circuit on Bank 2 Sensor 2 has low voltage or an open circuit.
Code P0057 means your Bank 2 Sensor 2 oxygen sensor's heater circuit has low voltage. Common causes: Faulty O2 sensor (80%), wiring issues (15%). Drivability: Yes, safe to drive. Repair cost: $50-$200 DIY, $150-$500 professional.
Can I Drive With P0057?
Yes, safe to drive
No restrictions
Stop driving immediately if: Flashing Check Engine Light (indicates misfire), loud exhaust noises, burning smell, significant power loss.
Symptoms of P0057
- 1Check Engine Light is on
- 2Slight decrease in fuel economy
- 3Increased exhaust emissions (may not be noticeable)
Common Causes of P0057
Parts most likely causing this code, ranked by probability
The heater element inside the oxygen sensor fails, causing the circuit to draw too little current.
80% of P0057 cases are fixed by replacing this part
Damaged, corroded, or open wiring to the oxygen sensor heater circuit prevents proper current flow.
15% of P0057 cases are fixed by repairing wiring
A blown fuse in the oxygen sensor heater circuit cuts off power to the sensor's heater.
4% of P0057 cases are fixed by replacing a fuse
A rare internal fault in the ECM/PCM prevents it from properly controlling the oxygen sensor heater circuit.
1% of P0057 cases are fixed by replacing the ECM/PCM
Check These First (Before Buying Parts)
- Visually inspect the Bank 2 Sensor 2 oxygen sensor and its wiring for any obvious damage, cuts, or corrosion.
- Locate and check the fuse for the oxygen sensor heater circuit in your vehicle's fuse box. Replace if blown.
How to Diagnose P0057
- 1Visually inspect the Bank 2 Sensor 2 oxygen sensor and its wiring for damage or corrosion.
- 2Check the fuse for the oxygen sensor heater circuit in your vehicle's fuse box.
- 3Using a multimeter, test the resistance of the heater circuit within the oxygen sensor itself.
- 4With the engine running, check for proper voltage and ground at the oxygen sensor connector using a multimeter.
P0057 on Popular Vehicles
Toyota Camry
2007-2024P0057 on a Camry is almost always a failed Bank 2 Sensor 2 oxygen sensor. Check for exhaust leaks near the sensor as well, which can sometimes affect readings.
85% fixed by replacing the O2 sensor
Honda Accord
2003-2024Accord models frequently experience O2 sensor heater failures. Ensure you are replacing the correct sensor (Bank 2 Sensor 2, which is the downstream sensor on the bank not containing cylinder 1).
80% fixed by replacing the O2 sensor
Ford F-150
2004-2024For F-150s, P0057 is typically a bad downstream O2 sensor on Bank 2. Check the wiring harness carefully for rodent damage or corrosion, especially in trucks that see off-road use.
75% fixed by replacing the O2 sensor
Frequently Asked Questions
What does P0057 mean?
P0057 indicates that the heater circuit for your Bank 2 Sensor 2 oxygen sensor is drawing too little current, signaling an open circuit or high resistance.
Can I drive with P0057?
Yes, you can drive safely with P0057. This code does not cause immediate drivability issues or engine damage. However, fix it within 1-2 weeks to prevent reduced fuel economy and increased emissions.
Will P0057 clear itself?
No, P0057 will not clear itself. The underlying electrical fault or failed sensor requires repair. The Check Engine Light will remain on until the issue is resolved and the code is cleared, either by driving after repair or using a scan tool.
How do I fix P0057 myself?
Start by inspecting the sensor and its wiring for damage. Check the relevant fuse. If those are good, test the resistance of the oxygen sensor's heater element and check for voltage and ground at the connector. Most often, replacing the Bank 2 Sensor 2 oxygen sensor resolves the issue.
How much does it cost to fix P0057?
DIY repair costs for P0057 are typically $50-$200 for a new oxygen sensor. Professional repair at a shop usually costs $150-$500, including parts and labor.
P0057 keeps coming back - why?
If P0057 keeps returning, it means the root cause was not fully addressed. This happens if you replaced the sensor but had a wiring issue, a blown fuse, or a rare PCM fault. Thoroughly re-check the wiring and power supply to the sensor.
Will P0057 fail emissions/smog test?
Yes, P0057 will cause your vehicle to fail an emissions or smog test. The Check Engine Light being on, regardless of the code, is an automatic failure in most states. Additionally, the faulty O2 sensor heater prevents the sensor from operating correctly, impacting emissions.
What's the difference between P0057 and P0058?
P0057 indicates a low voltage or open circuit in the Bank 2 Sensor 2 oxygen sensor heater, meaning too little current is flowing. P0058 indicates a high voltage in the same circuit, meaning too much current is flowing, often due to a short circuit.
P0057 on Honda Accord?
On a Honda Accord, P0057 most commonly points to a failed Bank 2 Sensor 2 oxygen sensor. These sensors wear out over time. Inspect the wiring carefully, but expect to replace the sensor itself.
Questions to Ask Your Mechanic
Did you check the resistance of the oxygen sensor's heater circuit?
Good answer: Yes, the resistance was out of specification, indicating an internal heater failure in the sensor.
What voltage and ground readings did you get at the sensor connector?
Good answer: I confirmed 12V power and a good ground at the connector, so the wiring to the sensor is good.
Repair Cost Estimate
DIY Repair
Parts only
$50-$200
Shop Repair
Parts + labor
$150-$500
Save $100-$300 by doing it yourself
Difficulty
intermediate
Time
1-2 hours
Intermediate - requires basic hand tools, a multimeter for electrical testing, and potentially an oxygen sensor socket. Access to the sensor can be challenging on some vehicles.
Cost of Waiting
Ignoring P0057 leads to reduced fuel economy and increased emissions. While it does not directly damage the engine, a continuously malfunctioning oxygen sensor can cause the engine to run rich or lean, which can eventually shorten the life of your catalytic converter ($800-$2,500 repair).
While You're In There...
If you need to remove exhaust components to access the sensor, replacing old gaskets prevents future exhaust leaks.
Applying anti-seize to the new sensor's threads makes future removal much easier and prevents seizing in the exhaust.
Tools You'll Need
- OBD-II Scan Tool
- Multimeter
- Oxygen Sensor Socket
- Ratchet and Extensions
- Wire Brush (for exhaust threads)
- Anti-Seize Compound
P0057 is a common code related to a sensor that wears out over time. The repair is usually straightforward, and your vehicle will run more efficiently afterward.
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Your Next Steps
Step 1: Perform a thorough visual inspection of the Bank 2 Sensor 2 oxygen sensor and its wiring for any signs of damage, fraying, or corrosion. Also, check the fuse for the O2 sensor heater circuit.
Step 2: If the visual inspection and fuse check do not reveal the problem, use a multimeter to test the resistance of the heater element within the oxygen sensor. Compare this to your vehicle's specifications. Also, check for 12V power and a good ground at the sensor connector.
Step 3: If the sensor's heater resistance is out of spec or there's a confirmed wiring issue, replace the Bank 2 Sensor 2 oxygen sensor or repair the wiring. You'll likely need a new oxygen sensor.