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2001 Nissan Maxima SE P0270 Fault: Is It Just a Speed Sensor Issue or Could There Be Deeper Problems?

Model: 01 Maxima SE Fault Code: P0270 Posted: 2011-07-11 08:06

I recently purchased a 2001 Nissan Maxima SE and am currently experiencing the OBD2 diagnostic code P0270 — 'Output speed sensor circuit malfunction'. My main concern is whether this code specifically points to the output speed sensor or if it could indicate a more serious underlying issue. The car is automatic, and I'm worried that fixing just the sensor might mask a bigger problem, especially since my used car warranty expires in less than 4 weeks. I bought the vehicle from a dealership about 2.5 hours away, so I’m hesitant to make multiple trips just for a repair — especially if it's something I can fix at home. Given that the issue only occurs when shifting from 2nd gear to Drive (D), and the car will not shift smoothly without stopping, restarting, or staying in D, I'm trying to determine whether this is a simple sensor replacement or a more complex transmission problem. Any insights on how to diagnose or fix this would be greatly appreciated.

Related fault codes

P0270

Comments (4)

Anonymous 2011-07-11 08:10

I just bought this car Friday and noticed the same issue — when I manually shifted from 2nd gear to Drive (D), the transmission wouldn't engage properly, triggering the check engine light. I had to stop, put it in Park, turn off the engine, then restart before being able to drive again. The car runs fine if left in D without shifting, which suggests a potential issue with the output speed sensor or transmission control module communication.

Anonymous 2011-07-11 08:20

Apologies — I meant to say '0720', not '01'. This was a typo when referencing the model year. The correct vehicle is a 2007 Nissan Maxima, not 2001.

Anonymous 2011-07-11 19:49

If your car is still under warranty, don't proceed with any repairs until you've confirmed the issue with the dealership. Fixing it prematurely could void coverage or lead to further damage — always prioritize warranty terms before making purchases or replacements.

Anonymous 2011-07-12 10:13

I’ve already spoken with the dealership and shared my diagnosis. I ordered a replacement output speed sensor for $107, which I plan to install this weekend. If it’s not the sensor, I’ll lose about $100 but will then take it back to them. If it is the sensor, they’ve agreed to reimburse the part cost — so I’m confident in this approach and believe it's a safe, cost-effective solution for most 2001 Maxima SE owners.