P0130 OBD-II Trouble Code: 02 Sensor Circuit Malfunction (Bank I Sensor 1)

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0130 code

P0130 is a diagnostic trouble code (DTC) for "02 Sensor Circuit Malfunction (Bank I Sensor 1)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0130 DIAGNOSTIC Get a fair and transparent estimate upfront

P0130 code definition

The P0130 code is associated with the bank 1, sensor 1, oxygen sensor. Your vehicle may have anywhere up to five oxygen sensors.

It also may be related to other codes, such as: P0131, P0132, P0133, P0134. P0135, P0171, or P0175.

What the P0130 code means

P0130 is the OBD-II generic code describing an issue with the bank 1, oxygen sensor 1 (HO2S B1 S1).

It indicates that the engine computer (ECM) is not detecting proper activity from the sensor. This will cause your ECM to turn a light on and change engine management strategies which will affect fuel economy.

What causes the P0130 code?

The HO2S sensor code may have several causes:

  • Disconnected plug to the sensor
  • Possible corrosion in the sensor connector
  • Damage to the sensor wiring to the ECM
  • Fuel system having poor volume to the engine (i.e. Fuel Pump or other component)
  • Intake vacuum air leaks
  • Loose connections in the air or fuel systems
  • Mass Air Flow sensor (MAF) reading out of range
  • Manifold Absolute Pressure sensor (MAP) reading out of range
  • Evaporative Emissions (EVAP) leaks
  • HO2S sensors reading out of range
  • Leaking fuel pressure regulator
  • The ECM is damaged

What are the symptoms of the P0130 code?

The P0130 code will produce a Check Engine Light on the instrument panel/dash and will likely affect:

  • How the engine performance runs during driving
  • Possible stalling
  • May cause the exhaust to show smoke in various colors from black to white
  • Fuel economy will also lower

How does a mechanic diagnose the P0130 code?

P0130 is properly diagnosed with a scan tool capable of sensor readings (not just one from an auto parts store).

A qualified technician can read the data from the scan tool to determine when the problem occurred, or if it is still occurring. They may clear the code / light and test drive the vehicle while monitoring data to see if it returns.

Based upon the conditions of the testing, further diagnosis will be required. Diagnosis could require multiple electrical tools such as:

  • An advanced scan tool to read the ECM.
  • A digital meter with attachments.
  • A smoke machine, which puts smoke in the intake system to detect leaks.

Common mistakes when diagnosing the P0130 code

Just replacing the part never guarantees a success in resolving your problem. It may be caused by several issues as listed above and possibly more.

A visual inspection and tests with a scan tool and special equipment also listed above will verify your problem before potentially spending money and time replacing the sensor.

Waveforms (electrical signals) will have to be evaluated by a scan tool or oscilloscope to ensure the part or repair that is required to be performed. Additional testing may be required.

How serious is the P0130 code?

The P0130 code will not likely cause your vehicle from running, however, it will:

  • Affect fuel economy
  • Cause fuel instability which may damage your engine
  • Potentially damage your catalytic converters which is an expensive repair
  • Prevent you from passing emissions

A technician can diagnose the problem with proper tools to verify these potential issues.

What repairs can fix the P0130 code?

The most common potential repairs to address the P0130 code are as follows:

  • Connect a professional scan tool. Verify the code exists.
  • Check for any other faults. Clear the code to see if it returns.
  • Analyze data from the ECM.
  • Road test the vehicle.
  • Check to see if the P0130 returns.
  • Inspect all of the items listed above. (wiring, leaks, etc)
  • Further diagnose the problem with the equipment listed above (scan tool, voltage meter). The signals from the sensor need to be analyzed to determine where the problem exists. If the signals are fine, then we need to move towards the wiring or computer.
  • Replace the component which is faulty.

Additional comments for consideration regarding the P0130 code

Any sensor issue may occur constantly or intermittently. Some fault codes may require more time to diagnose.

With this particular code, the solution could be simple or require extended time to resolve. Depending on your vehicle, it may take several hours to determine the root cause.

I have experienced this code in the past. After using a scan tool and monitoring the voltage, I could determine if the oxygen sensor was at fault. With the scan tool connected, I typically spray the engine and vacuum lines with brake cleaner while watching the RPM and oxygen sensor values to look for leaks. The RPM or sensor values will change when sprayed if there is a leak in the area sprayed.

I have found vacuum hoses from the engine disconnected, loose air intake hoses from the air filter, and faulty oxygen sensors. In one case I found the wiring was routed incorrectly and caused the wiring to touch the exhaust manifold. The wires burned and shorted to ground causing the fault.

Another case, I found a rodent chewed threw the wiring. The P0130 code may have many root causes which requires a skilled technician to find the cause.

The vacuum hose system requires inspection. A scan tool inspection is required. Then we can determine where the fault lies. We could clear the fault code / light first, and verify if the Check Engine Light returns initially, and go forward from there. It might have been a weird occurrence from bad gas, weather, or a permanent problem.

Vehicles with high mileage (over 100k) may just need a sensor. I typically replace mine at 80,000 miles to prevent problems.

Need help with a P0130 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

trouble codes
Check Engine Light
P0130

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0130 code.

SCHEDULE P0130 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(6,144)

Rating Summary
5,685
221
51
35
152
5,685
221
51
35
152

Chris

11 years of experience
13 reviews
Chris
11 years of experience
Ford F-150 - Check Engine Light is on - North Salt Lake, Utah
We were having problems with our check engine light, and Chris was exceptionally thorough until he found the problem and could help resolve the situation. We appreciate having someone who cares enough to get the job done right, not just done. We will definitely use Chris' services in the future. Thanks Chris.

Leng

21 years of experience
2 reviews
Leng
21 years of experience
Mazda MPV - Check Engine Light is on - Seattle, Washington
Leng arrived on time and explained the issue that my van is having. I will make a follow up appointment for the fix. Friendly, easy to talk to, and professional - thank you very much!

Okela

13 years of experience
11 reviews
Okela
13 years of experience
Land Rover LR4 - Check Engine Light is on - Brooklyn, New York
Okela was incredible! He is super thorough and took time to walk us through the issues with our LR4. Couldn’t recommend more! Thank you Okela!!

Robert

37 years of experience
188 reviews
Robert
37 years of experience
Land Rover LR2 - Check Engine Light is on - Atlanta, Georgia
Robert arrived on time. Did a diagnostic check quickly. He was friendly, and gave great service. He knows how to work on a Land Rover.


Related questions

Engine code P0130 - Oxygen sensor

The code is for the oxygen sensor not putting out enough voltage, causing the vehicle to run rich all the time since the computer thinks it is running lean until the computer reaches its rich limit. Check the oxygen sensor...

When nearing low fuel, car will lose acceleration power, wheel will lock as well. Battery & Shift icon come on, has a few CEL's on

Hello, thank you for writing in. There is one major issue that is likely causing everything else you are experiencing. This is your fuel system. You need to start by checking and/or replacing your fuel pump. When it gets low,...

P1346, P1349, P0130,and P0133 codes are read on a scanner.

Hi there. The movement of the vehicle when starting the engine and driving in the parking lots would be caused by an engine or transmission mount or both. Check the mounts and see if any of them are broken from...

More related articles

B1920 OBD-II Trouble Code: Air Bag Passenger Circuit Failure
B1920 means there the airbag system on the passenger side is not working properly. This is likely due to faulty wiring.
B1392 OBD-II Trouble Code: Power Door Memory Lock Relay Circuit Failure
B1392 means there is a malfunction with the power door memory lock relay circuit. This is likely due to damaged wiring or circuit failure.
P0022 OBD-II Trouble Code: Camshaft Position A - Timing Over-Retarded (Bank 2)
P0022 code definition Camshaft Position A - Timing Over-Retarded (Bank 2) What the P0022 code means P0022 is the OBD-II generic code...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com