Having problems with your 2000 Saturn SL ?

Got a Saturn L200 2003. PO171 keep coming back since 2 weeks. I put injector cleaner in gas and cleaned air filter but it does not seem to solve problem. Unusual thing is that the rad fans get ON continuous when code comes in but they stop as soon as I erase the PO171. I note that engine is also running faster at idle and some small bucking on highway at constant speed. Any clue of problem ?? Thanks Slalom64

Posted / edited by AnonymousUser on : 11-12-2017

Answers :

Hi! Have you checked the TPS (throttle position sensor)? YOu may want to start on the TPS. Hope this helps and thank you for using FixYa!
The code P0171 - System Too Lean (Bank 1), this basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.

Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.

Symptoms: You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

Causes: A code P0171 may mean that one or more of the following has happened:
* The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
* There could be a vacuum leak downstream of the MAF sensor.

Possible solutions include:
* In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
* Inspect all vacuum and PCV hoses, replace if necessary
* Check for a dirty fuel filter and proper fuel pressure

Test it and tell us news.
Repair Help & Product Troubleshooting for 2000 Saturn SL

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0107 seconds