CEL Codes: 2003 Boxster S Triptronic

Watzamatoni · December 8, 2010

Hello,

I am a fairly new Boxster owner and am trying to prepare myself for the inevitable maintenance and repairs that I was warned about. I do have an appointment tomorrow with my mechanic, however I am really concerned about what to expect. :-)

2003 Boxster S, Triptronic

64,895 miles

I have a Check Engine Light that appears each time the car is started that generates four codes:

P0102 Mass Air Flow Sensor - Below Lower Limit

P0332 Air Temp

P0112 Intake Air Temperature Sensor - Below Lower Limit/NOx Sensor (Bank 2)

P0740 Torque Convertor

Note: the brake light switch will come on intermittently and the automatic downshift seems to lock up a bit when I use the triptronic to move from 2nd to 1st. It is also intermittently 'slugglish' when accelerating from a stop.

I have experienced a couple of misfires, especially when going uphill, otherwise no other performance issues.

Any info would be helpful...

Loren · December 8, 2010

:welcome:

P0102 and P112 point towards a bad (or possibly disconnected MAF sensor).

P0332 Knock Sensor 2 - Below Limit

Possible causes:

– Knock sensor loose

– Open circuit or short to ground

– Corrosion on connector

– Knock sensor

– Short to B+

P0740 Torque converter clutch, excessive power consumption

This is a CAN bus reading that is sent to the instrument cluster. I've seen this often from wheel spin.

I would reset this one and see if it comes back under normal driving.

As I said at the start - begin with your MAF problem and see if any of these others come back.

Watzamatoni · December 11, 2010

The good news: The CEL codes were caused by rodent damage to the wiring harness.

The bad news: I hydroplaned on oily/gasy pooled water on the way to the shop going about 10mph while making a left turn after a stoplight. The car skidded up over a median filled with bowling ball sized cobbles (insert sound of crunching metal here) and plowed into three lanes of oncoming traffic. Fortunately, the rocks slowed us down so that the cars were able to stop in time (a PT Cruiser was less than an inch away when we both finally came to a full stop.) I managed to drive the car off after exchanging insurance and am waiting for the insurance company to decide whether or not to total the vehicle.