scottl951

Wife's car. She just called and said lots of yellow on the dash and it says reduced engine power drive on possible (or something like that). I went home. It had that and a pcm fault on the dash. I pulled the codes and found a p1517 but my scanner isn't P so it wouldn't tell me what it is. I cleared the codes and the car is ok. For now, I'm thinking. Any thoughts?

RAudi Driver

scottl951

Throttle body. Thank you. I was having another code from it a few months ago. I'll try the 60 second thing.

scottl951

Update-
60 second thing didn't work. I have a throttle body on order.

But, it's throwing new codes now. P1542, P1502

Thoughts? Mine are a gallon of gas and a match.

RAudi Driver

How old is your battery?

scottl951

Not old. I think it was changed sometime last year.

RAudi Driver

Vehicle » A L L Diagnostic Trouble Codes ( DTC ) » Testing and Inspection » P Code Charts » P1542




P1542
Your Vehicle: 2011 Porsche Cayenne Turbo (92A) V8-4.8L Turbo


P1542

Diagnosis information - Control unit DME (DFI)

Throttle adjusting unit - start test

Diagnostic conditions

• Throttle adjusting unit taught
• Switch on ignition , then
• Switch off ignition , for > 1 min
• Switch on ignition

Possible fault causes

• Throttle adjusting unit Faulty

Fault setting condition(s)
The start test was faulty twice in a row (See [Information]).

INFORMATION
Start test test: When the ignition is switched on , the throttle valve is opened by a certain value, and must then close on its own.

RAudi Driver

P1502

Diagnosis information - Control unit DME (DFI)

Throttle adjusting unit

Diagnostic conditions

• Vehicle is stationary
• Coolant temperature 5 ... 100 °C (°F)
• Intake air temperature 5 ... 40 °C (°F)
• Accelerator pedal not actuated (0 %)
• Ignition off
• then Switch on ignition > 60 Second(s) at Engine off

Possible fault causes

• Adaptation was not performed (successfully).
• Throttle adjusting unit Faulty

RAudi Driver

The gas pedal is free and clear of any obstacles?

I had a buddy who got a water bottle cap stuck under his clutch pedal. It took the dealer months to figure out. Not a Porsche but on a ford Focus RS. LOL

scottl951

I'll check for obstructions. Come to think, my wife is constantly throwing her trash down there. I found the batter was replaced in 09/23. Thanks much! I'll continue down the throttle body road and see where it leads.

scottl951

R8-
Anything special about replacing the throttle body? Is it as simple as replacing the hardware and doing the 60 second thing?

scottl951

Update-
I replaced the throttle body yesterday. Pretty straight forward. The plenum attached to the TB is just attached by a 'hook' on to the TB bolts. Loosen the bolts a touch and turn the plenum to the right and it just comes off. Cleared codes and did the 60 second thing. Car runs great so far. Fingers crossed this fixed it. If it doesn't screw up in a week, I'll say it's fixed.