Hi, thank you for welcoming me and my 2.0 2000 beetle

612 Views 2 Replies 2 Participants Last post by Liljay, Sep 25, 2015

Liljay

Discussion Starter · Sep 24, 2015

I recently had my cel illuminate.

The codes
P0303
P0134
P0116
P0171

I've recently changed plugs, leads and coil

The P0303 code comes up twice as an active and a pending.

Any thoughts what's the problem

Save

1 - 3 of 3 Posts

billymade

· #2 · Sep 24, 2015 (Edited)

http://wiki.ross-tech.com/wiki/index.php/16687/P0303/000771 (misfire cylinder #3)

P0134 Volkswagen - HO2S11 Sensor Circuit No Activity Detected (Bank1, Sensor 1; "upstream" before the catalyst 02 sensor)

Read more: P0134 Volkswagen HO2S11 Sensor Circuit No Activity Detected OBDII Engine Light Trouble Code | Engine-Codes.com

16500/P0116/000278 - Ross-Tech Wiki (coolant temp sensor; probably bad)

16555/P0171/000369 - Ross-Tech Wiki (maybe related to lack of activity from upstream 02 sensor error above)

What scan tool; do you have access to? Does it have live data capability? You might check the B1S1 upstream 02 sensor activity and see if it is working as it should? Checking the fuel trim levels; in real time, would be helpful as well.

http://wiki.ross-tech.com/wiki/index.php/Fuel_Trim_Info

See less See more

Save

Liljay

Discussion Starter · #3 · Sep 25, 2015

Hi thanks for your reply. The information you provided is excellent.

I have only got a cheap scan tool but it does do live readings so will check tomorrow and post back my findings.

Thanks for your help

Save

1 - 3 of 3 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month