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  • Diagnostic trouble code (DTC) P013E stands for “O2 Sensor Delayed Response–Rich to Lean (Bank 1, Sensor 2).” The code is logged when the powertrain control module (PCM) perceives a delay in response from the downstream oxygen (O2) sensor located in bank 1.
  • Some possible causes behind the P013E code include a broken oxygen sensor, wiring issues, and a faulty catalytic converter.
  • Common symptoms of the P013E code include an illuminated check engine light, poor engine performance, and poor fuel mileage.

On-board diagnostic (OBD) codes are designed to help you or your mechanic identify possible issues in your car. They can be retrieved with a scan tool, but knowing what they mean is another thing. Before attempting any fixes to resolve them, you should first understand the meaning, triggers, and symptoms of the logged code.

What Does the P013E Code Mean?

Diagnostic trouble code (DTC) P013E stands for “O2 Sensor Delayed Response – Rich to Lean (Bank 1, Sensor 2). It is logged when the powertrain control module (PCM) perceives a delay in response from the downstream oxygen (O2) sensor located in bank 1.

Bank 1 in this code refers to the side of the engine that houses cylinder #1. Sensor 2 refers to the post catalytic converter oxygen sensor.

See also  P0138 Code: O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)
obd code P013E
Code P013E may register if the PCM perceives a delayed response from the downstream oxygen (O2) sensor located in bank 1.

The purpose of the downstream oxygen sensor is to monitor the amount of oxygen in the exhaust. The PCM uses the data the sensor provides to determine the efficiency of the catalytic converter. The module monitors the signal coming from the oxygen sensor, checking how long it took for the sensor to respond to rich-to-lean and lean-to-rich transitions. If the average response time is slower than factory specifications, error code P013E is set.

If the PCM perceives a delay from the oxygen sensor in bank 1 during the rich-to-lean transition within a set amount of time, it logs trouble code P013E.

Depending on the severity, other DTCs may also be stored alongside P013E. Some of these codes are P013F, P014A, P014B, P015A, P015B, P015C, and P015D.

Note: The definition of code P013E may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

P013E cause
A broken oxygen sensor is a possible cause of code P013E.

What are the Possible Causes of the P013E Code?

Here are some common triggers of the error code P013E:

What are the Common Symptoms of the P013E Code?

You may notice the following symptoms if your vehicle has a logged P013E error code:

See also  P0132: Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 1)
Poor engine performance P013E
Poor engine performance can be a sign of a logged P013E code.

How to Diagnose the P013E Code

If you have plenty of DIY experience fixing vehicles, you can try diagnosing P013E yourself by using a scan tool record utility; otherwise, it’s best to let a professional handle it.

Code P013E should be resolved immediately to avoid complications. Diagnosing this code is the first step; however, doing so might prove difficult because it has many possible triggers. Every vehicle is also configured differently, so diagnostic processes may vary.

For instance, the diagnostic process of a code P013E on a Ford may be different from the diagnostic process of a code P013E on a Volkswagen. To make sure you’re on the right path, only apply diagnostic and repair steps that are specific to your vehicle. If you’re still unsure, it might be time to let a technician take over.

How to Fix the P013E Code

Code P013E may share similar triggers and symptoms with other DTCs, but each code’s diagnostic and repair procedure may vary. All vehicles are built differently, so it would be best to consult the appropriate repair manual before DIY-ing any fixes.

Aside from getting a repair manual, you may also subscribe to an online repair database before attempting any fixes. You should also research confirmed solutions that are specific to your vehicle to determine whether you have the right tools and know-how for the job. If not, you can always bring your car to an auto repair shop and let the professionals handle it.

See also  P0137 Code: Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 2)

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About The Authors
Written By Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Technical Reviewer at

Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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