# Bank 1 O2 sensor **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [June 7, 2025, 10:50am UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555 "2025-06-07T10:50:41Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Midwestman214\_193832](https://avatars.discourse-cdn.com/v4/letter/m/c5a1d2/32.png) [@Midwestman214\_193832](https://community.cartalk.com/u/Midwestman214_193832)\ **Post date:** [June 7, 2025, 10:50am UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555/1 "2025-06-07T10:50:41Z")
2000 Honda CR- V — Engine light check indicates my Bank 1 O2 sensor is bad. I want to replace with a Denso, but none in stock online or locally before I leave on 1200 mile trip. OK to do the 1200 miles before I replace it? Thanks guys. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [June 7, 2025, 12:55pm UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555/2 "2025-06-07T12:55:39Z")
I would not recommend you drive it without fixing it if it is Bank 1, Position 1. If it is Bank 1, Position 2, sure, go ahead. Telling us the actual code you see (P1234…) is important to these discussions. ---
**Author:** ![JoeMario](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@JoeMario](https://community.cartalk.com/u/JoeMario)\ **Post date:** [June 7, 2025, 12:56pm UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555/3 "2025-06-07T12:56:50Z")
Welcome to the forum. Can you post the actual code you’re seeing? The answer to your question depends on if it’s sensor 1 or sensor 2. Sensor 2 is not used in adjusting fuel trim. If it’s sensor 2, then it would be no problem to take your 1200 mile trip. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [June 7, 2025, 1:51pm UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555/4 "2025-06-07T13:51:37Z")
I have no idea when that Denso part will be available again if ever for this 25 year old vehicle. It just seems like if there is an after market part wouldn.t using that be better than being a long ways from home and really needing that part be better. ---
**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\ **Post date:** [June 7, 2025, 2:02pm UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555/5 "2025-06-07T14:02:47Z")
> [@Midwestman214\_193832](#): > > Engine light check indicates my Bank 1 O2 sensor is bad. I’m no mechanic, so take this with a grain of salt, but in general a code tells you that a sensor is reading a value outside the allowable range. It doesn’t tell you if the sensor is bad or if it’s correctly indicating that something else is wrong, so there’s normally a diagnostic procedure to be followed to determine that. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 7, 2025, 2:36pm UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555/6 "2025-06-07T14:36:10Z")
It depends on what O2 sensor it is, and what the code is. For example, if it’s a P0141, it means that there’s a problem with the heater circuit for the O2 sensor after the catalytic converter. Not a big deal. That just means it’ll take longer for the sensor to heat up before it’ll start working. But if the code has anything to do with the sensor before the catalytic converter, then you want to get it fixed before the trip. Because it could result in poor fuel mileage. Tester ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [June 7, 2025, 2:50pm UTC](https://community.cartalk.com/t/bank-1-o2-sensor/200555/7 "2025-06-07T14:50:27Z")
FWIW, I just checked Advanced Auto and in my area and they are showing Denso upstream direct fit O2’s in stock, but no downstream O2’s… So if that is your case, then go for it…