Dreaded Anti pollution fault

[ic1011]

My wifes car started with an immobilser error which corrected , then she got an anti pollution fault,
which made the car drive lumpy, followed by airbag warning fault.
Diagnostic Codes
RAC DIAGNOSTIC SYSTEM
System Type: ENGINE SYSTEM TEST/VALUES
Name: RHY - EDC 15C2
DTC: P0101 ,Air flow sensor circuit, at maximum limit
DTC: P1537,Accelerator pedal position signal; accelerator pedal jamme
DTC: P0571 ,Brake switch circuit no signal
DTC: P1138,Fuel pressure regulator valve Mechanical malfunction
DTC: P0115,Coolant temperature sensor; incorrect reading
DTC: P0340,Engine speed signal, incoherent value
DTC: P1112,Fuel pressure information; detection of high pressure leak

[GiveMeABreak]

You haven't stated what car model this is for. Best to pop the VIN up (automasked on post submission) to avoid further questions.

[ic1011]

Peugeot 206 2.0 HDI 2003 (53 plate)

[RichardW]

That looks to me like a stuffed battery, bad earth or fault on the 5V reference circuit. You would need to clear all the codes to see what comes back, then look at some data to see if anything looks amiss, and do some old school testing to see if the 12V and 5V circuits are there, and if there is an earth problem somewhere.

[Huskyxantia]

Thats a lot of codes for the 2.0hdi

[wheeler]

I'd also be checking that the alternator is properly charging the battery.