Blackamoor
New member
2020RT limited Fault code P212F and P2131.
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What's going on here - Fault codes P212F and P2131?
- Thread starter Blackamoor
- Start date
Snowbelt Spyder
Well-known member
Hmmmm. These two codes indicate a failure of the position signal coming from the Throttle Position Sensor, or TPS. Not to be confused with the Throttle Acceleration Sensor, or TAS - which is sometimes impacted by the installation of those pedal box things.
The TPS is a dual potentiometer on the throttle body and tells the ECM what the angular position of the butterfly valve is. Unlike the 998, the 1330 TPS cannot be replaced separately, the entire throttle body must be replaced, if it comes down to that. Or the ECM itself, if it comes to that.
However, this failure appears to be extremely rare for the 1330. There is no history of this thing failing. This is the first time anyone has posted about it here, and no joy searching Google either. So, I'm inclined to think there is something else afoot.
When you first turn on the ignition key of your Spyder, you hear a few noises coming from the machine. One of these noises is the ECM opening and closing the throttle body doing a test routine. I would think that this is when the test for the TPS fails. Now, I am acutely aware that not all Spyder problems are battery problems. But, because this test is done at key on, and if you are still running that original Chinese battery, you need a new battery anyway. Replace it. A low system voltage could be creating this issue with you. And of course, if you've done any recent mods that started this whole thing, un-do them.
Short of replacing the entire thing, your dealer can and should hook-up to BUDS2 and do a TPS Reset. This lets the ECM re-learn the TPS signals again. If it fails, then he can dig deeper. Also, if you are inclined to do the work yourself, you can check for harness connection and wiring damage. The shop manual gives a table of resistance measurements and voltages that you can check, but if you're not doing the work yourself, you don't need that info here. Your dealer would do all of that over again, anyway. BUDS2 will be required in case the entire throttle body is replaced, in order to do that reset procedure. So, unless you have BUDS2, you won't be doing a throttle body replacement yourself.
Anyway, if you still have any extended warranty time left, better get thyself to the dealer in case this gets expensive. Good Luck. Let us know what happens.
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