my Old Peugeot 207 is showing these errors upon turning the key, car won't start immediately and it takes extra few seconds for petrol pump to kick in.

If try to start the car immediately after switching it on, it won't start.

Anti Pollution faults kicks in constantly/randomly upon successful ignition and on the road, I don't know what's wrong with it or how to fix it.


Confirmed working
1. key fob still locks/unlocks the car normally.
2. Battery is still working.

Symptoms
1. Observed higher petrol consumption.
2. Fault errors as mentioned in the title.

Anyone has faced such problems before and how do you resolve this?

so this means the o2 sensor is preventing the car from starting and triggering ECU Errors ?

are those cheap "wireless" odb2 reliable?

bought a cheap bt odb2 elm327 from shopee, won't connect to ECU pops out. :| tried with different phones, still the same.

Tried on myvi and peugeout.