P2097 OBD-II Trouble Code: Post Catalyst Fuel Trim System Too Rich Bank 1

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P2097 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2097 code

P2097 is a diagnostic trouble code (DTC) for "Post Catalyst Fuel Trim System Too Rich Bank 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 for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 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$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P2097 DIAGNOSTIC Get a fair and transparent estimate upfront

Check Engine Light

P2097 code definition

P2097 is a general OBD-II diagnostic trouble code that indicates a fault with the post catalyst fuel trim system being too rich in bank 1. This code may be seen with misfire, lean, or rich codes as well.

What the P2097 code means

The engine control module (ECM) uses the second oxygen sensors to measure the exhaust after it has passed the catalytic converter. If everything is working properly, the catalytic converter should burn off any excess emissions and the fuel trim should be within range. When the oxygen sensors after the catalytic converter relay to the ECM that the fuel trim is too rich, then the P2097 code is set. A Check Engine Light will accompany the P2097 code as well as a failsafe mode. The failsafe mode will remain until normal operation is found or the fault is resolved.

What causes the P2097 code?

Commonly these items are the cause of the P2097 code:

  • Exhaust leak near the downstream oxygen sensor
  • Catalytic converter failure
  • Faulty oxygen sensor
  • Oxygen sensor that is reading poorly

What are the symptoms of the P2097 code?

The symptoms can vary greatly due to the many different causes:

  • Check Engine Light visible on the dashboard
  • Lean condition
  • Rich condition
  • Engine misfires
  • Lack of power
  • No felt symptoms at all
  • Engine that stalls when started

How does a mechanic diagnose the P2097 code?

A mechanic will begin by hooking up a scan tool and checking for any codes stored in the ECM including history and pending codes. Note all codes found in addition to the freeze frame data. Then all codes will be cleared and a test drive performed.

Next, a visual inspection will be done to look for any obvious signs of damage or broken components. The scan tool will then be used to check the oxygen sensor readings and compare them between banks, then the long-term fuel trims will be observed while the throttle is operated. The vehicle will then be raised and inspected for exhaust leaks. Lastly, the catalytic converter will be tested.

Common mistakes when diagnosing the P2097 code

Common mistakes can be made when the catalytic converter is blamed but the fault actually lies with an oxygen sensor that is reading faulty. Step-by-step diagnosis is important to make accurate repairs. Steps should be followed in the proper order without skipping any.

How serious is the P2097 code?

The P2097 code can have no symptoms or may have an engine that will not run. If drivability concerns are present, the vehicle should not be driven until the vehicle is repaired.

What repairs can fix the P2097 code?

Simple repairs such as these can fix the P2097 code:

Additional comments for consideration regarding the P2097 code

Exhaust leaks are generally fairly simple to find. There are two simple tests for them. The first is to inspect the exhaust and look for any soot marks or places where the exhaust is very dark. These are easy to see and indicate an exhaust leak.

To find smaller leaks, the technician will run their hands near the exhaust while the vehicle is running to feel for the air leaking out. Caution should be taken when the last test is done as the exhaust can cause burns.

Need help with a P2097 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
P2097

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P2097 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,526

Rating Summary
3,215
155
41
23
92
3,215
155
41
23
92

Paul

22 years of experience
206 reviews
Paul
22 years of experience
Extremely wise, honest, professional and knows his craft. He isn't a crook mechanic from one of these shops he's actually interesting in fixing your problem. If you're sick of being overcharged and cheated by these shop mechanics then i'd definitely recommend this guy and his excellent services even for the smallest of jobs wether that be spark plugs or just advice.
2004 CHEVROLET MALIBU - CHECK ENGINE LIGHT IS ON - LAS VEGAS, NEVADA

Jonathan

32 years of experience
216 reviews
Jonathan
32 years of experience
Pinpointed exact problem.
2005 NISSAN 350Z - CHECK ENGINE LIGHT IS ON - HOLIDAY, FLORIDA

Chris

13 years of experience
397 reviews
Chris
13 years of experience
He was very knowledgable, came on time, and was efficient. I've had some bad experiences with YourMechanic and he was a redeeming one
2010 DODGE CHARGER - CHECK ENGINE LIGHT IS ON - SAN FRANCISCO, CALIFORNIA

Brikk

15 years of experience
299 reviews
Brikk
15 years of experience
Very knowledgeable and polite. Explained everything in clear detail. Would recommend to others.
2009 GMC ACADIA - CHECK ENGINE LIGHT IS ON - WAXHAW, NORTH CAROLINA

More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...

Related questions

Q: Car won't accelerate past 3000rpm

This issue could be caused by a variety of things. I would suggest by checking to be sure that the idle air control module is working properly. Also, check to be sure that the throttle body is delivering...

Q: Check Engine light on with code P2181

Having the OBD code for your Volkswagen Eos is a great start to narrowing down a proper diagnosis on your vehicle. The code, P2181, stands for Cooling System Performance. This code is meant to give a certified mechanic a starting...

Q: The Check Engine Light came on, I hooked it up to my scanner and got the code P0308

Hello. A cylinder misfire can be caused by many things. If you are not able to notice any issues with engine performance then the misfire is likely minor or intermittent. A few common causes for a misfire are a faulty...

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.

1-800-701-6230 · hi@yourmechanic.com