P1502

[GaryFB]

Hi Everyone; I must be over looking something, or there is a secret to the throttle adaptation. For a 2002 Boxster, the car sat unused in the garage. I replaced the battery, when the car started, I got a code P1502, and the engine ran real bad and would barely accelerate. Using the PST2, I erased the code while the engine was running, and the engine ran smooth and was responsive. Turn the key off and the engine runs terrible and will not accelerate. The manual says the engine throttle performs a test on the safety return spring and this throttle is failing the test. I purchased a new throttle form the dealer, performed the adaptation, and have the exact same problem.

What am I doing wrong? Thanks in advance.

[Loren]

Did you do the new throttle adaption?

1. Switch on the ignition.

2. Wait one minute. Do not press the accelerator.

3. Switch off the ignition for at least 10 seconds.

4. Read out the fault memory.

[GaryFB]

Did you do the new throttle adaption?

1. Switch on the ignition.

2. Wait one minute. Do not press the accelerator.

3. Switch off the ignition for at least 10 seconds.

4. Read out the fault memory.

Hi Loren; Thank you for the reply. Yes, I performed the adaption as you described, that is exactly how it is written in the manual. I also searched this site & checked all the TSBs, but have not found anything. Thanks.

I also looked at the 7 different throttle & pedal values. I should have hit Save, or at least written them down. But the code appears to be related to the time required to close the throttle.

[Loren]

I guess I would start to look at the wiring and pins in the plugs.

Also, was the part number of the replacement the same as the original or a "newer" part number?

[GaryFB]

I guess I would start to look at the wiring and pins in the plugs.

Also, was the part number of the replacement the same as the original or a "newer" part number?

Hi Loren; thank you for the reply. I will post what I find. I was just hoping someone had come across this before.