2001 Volkswagen Jetta Supply Voltage Low & Circuit Malf

2001 VOLKSWAGEN JETTA
90,500 MILES • 6 CYL • FWD • MANUAL
Avatar
SEANCHON
  • MEMBER
  • 1 POST
Hi,

I am seeing the following error codes:

P0100 - Mass or Volume Air Flow Circuit Malfunction
P0110 - Intake Air Temperature Circuit Malfunction
P0115 - Engine Coolant Temperature Circuit Malfunction
P0120 - Throttle/Pedal Position Sensor/Switch A Circuit Malfunction
P1600 - Power Supply (B+) Terminal 15 Low Voltage

Any suggestions what may be causing this?

The only information I could dig up that may be related is from this forum post: http://www.bba-reman.com/forums/topic66546-1-1.aspx

Should I be checking my ECU first? Could it be anything else?
Aug 12, 2009 at 3:23 PM
Advertisement
Avatar
SEANCHON
  • MEMBER
  • 1 POST
Turns out it was a loose sensor located near the air filter. D'oh!
Sep 16, 2009 at 2:26 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.