Fault code P2299 is called “Brake Pedal Position (BPP)/Accelerator Pedal Position (APP) Incompatible” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II. Technical description and explained code P2299. This diagnostic trouble code (DTC) is a generic transmission code.
Check all fuses and let us know what you find. Next is to check power/ground at the DLC connector (OBD2 port) Instructions below, Pin 16 - battery positive, pins 4 and 5 ground. Hope that helps. Let me know if your fuses are ok and you have battery voltage pin 16 and good grounds on pins 4 and 5. Regards, Joe.
You will find below several pictures which will help you find your OBD connector in your Citroen C4 Picasso (2006 - 2013). The OBD2 port is on the left of the steering wheel. Unscrew the screw one quarter turn and remove the cover. Find a compatible scanner for Citroen C4 Picasso (2006 - 2013)
I have OBD2 units (I sell them online!) What will Lexia do that OBD2 diagnostic check won't do? Let me know. Thanks. EDIT My plan was to get a mechanic to look over the car before buying in any case before buying. Could I get a 'Citroen Specialist' mechanic - without going to a Citroen dealer and paying extortionate sums of money?
Let dry and apply electrical grease where the terminals contact. If you have a scan tool, clear the diagnostic trouble codes from memory, and see if P2541 code returns. If it does not, then the connections were most likely your problem. If the P2541 code does return, we will need to test the FPS sensor and its associated circuits.

Diagnostic trouble code (DTC) stands for “Brake Pedal Position/Accelerator Pedal Position Incompatible.” Note: The definition of code P2299 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.

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citroen c4 picasso obd location