P2196: O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1
What Does P2196 Mean?
P2196 is a diagnostic trouble code indicating: O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 1. This code relates to the powertrain system. It has been reported in NHTSA complaints across 7 different vehicle models.
Symptoms of P2196
- ⚠️ Check engine light illuminated
- ⚠️ Rough or unstable idle
- ⚠️ Hesitation during acceleration
- ⚠️ Poor fuel economy
- ⚠️ Engine misfires
- ⚠️ Abnormal exhaust smoke
Common Causes
- 🔍 Failed or deteriorated catalytic converter
- 🔍 Faulty oxygen sensor
- 🔍 Dirty or failed MAF sensor
- 🔍 Blown head gasket
- 🔍 Turbocharger or boost system issue
- 🔍 EVAP system component failure
P2196 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"VEHICLE HAS BEEN STALLING DAILY SINCE JULY 2013. VEHICLE WHEN IN FOR SERVICE 4-30-14 DO TO DRIVERS CONCERN OF VEHICLE CRASHING AT FREEWAY AND SURFACE STREET SPEEDS. ON 4-29-14 THE VEHICLE STALLED (5) TIMES AND SEEMS TO STALL DURING THROTTLE CHANGES FROM CLOSED TO TRAFFIC FLOW SPEEDS. THE "CHECK ENG"
— Ford Escape owner, 07/17/2013
"While driving on the expressway the check engine light came on and the car started to shake violently. The car doesn't accelerate right away. After inspection, the auto shop provided the following comments: Engine is burning coolant, upon arrival vehicle low 1 gallon of coolant no coolant leaks pres"
— Ford Escape owner, 07/05/2024
"Check engine light came on Saturday morning on my way to work, When checked it comes up as fault codes P0420, with secondary codes of P144A - EVAP Emission System Purge Vapor Line Restricted/blocked, P1450 - Unable to bleed up fuel tank vacuum, and P0131 - O2 Circuit Low Voltage (Bank 1, Sensor 1), "
— Ford Focus owner, 12/11/2021
Source: NHTSA Complaints Database
Most Reported Vehicles for P2196
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | FORD FOCUS | |
| 2 | FORD FUSION | |
| 3 | FORD EDGE | |
| 4 | VOLKSWAGEN PASSAT | |
| 5 | FORD ESCAPE | |
| 6 | KIA SPORTAGE | |
| 7 | VOLKSWAGEN JETTA |
P2196 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Frequently Asked Questions
Can I drive with this code?
Will this code clear itself?
How do I find the exact cause?
Reported Repair Costs for P2196
Based on 5 owner-reported repair costs from NHTSA complaints.
⚠️ These are owner-reported costs, not estimates. Actual costs vary by location, labor rates, and root cause. Source: NHTSA complaints database.
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Check and tighten the gas cap — replace if cracked or damaged ($5-15)
- 🔧 Test the relevant sensor(s) with a multimeter before replacing
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.