P0157
P0157: Fuel Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage
📖 What Does P0157 Mean?
Symptoms
- • Rough idle
- • decreased fuel efficiency
- • poor engine performance
- • and a check engine light with a code P0157.
Common Causes
- • Faulty fuel heated oxygen sensor
- • wiring issue
- • sensor's heating element problem
- • or a vacuum leak.
Possible Solutions
1. Disconnect the battery to clear the code. 2. Inspect the fuel heated oxygen sensor for signs of damage or corrosion. 3. Check the wiring harness for any signs of damage or wear. 4. Test the sensor's voltage signal using a multimeter. 5. Replace the fuel heated oxygen sensor if necessary.
Fixing this on your car?
Get a vehicle-specific repair guide with exact parts, oil specs, and torque settings for your make and model.
🚙 Get Vehicle-Specific Fix Guide
Select your vehicle to see a customized repair guide with exact parts and specifications:
❓ Common Questions About P0157
Can I drive with code P0157?
You can drive for a short time, but should address code P0157 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix P0157?
The estimated repair cost for code P0157 is between $150 and $300. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
Recommended Tools
Need a Pro?
Complex codes like P0157 can be tricky. Don't risk it if you're unsure.
Recommended Tool
Professional OBD2 Scanner
Read & clear codes, view live data, and reset service lights yourself.
View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with P0157
Oxygen Sensor Heater Circuit Malfunction Bank 2 Sensor 1
P0156: Fuel Trim Malfunction Bank 2 Sensor 2
P0158: Fuel Trim Malfunction (Bank 2 Sensor 2)
P0159: Fuel Trim Malfunction Bank 2 Sensor 2
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system