Hi

I have recently bought boa mazda5 2.0d sport and didn't notice on the round town test drive it was low on power, when driving to work a few days later I noticed really low power when I put my foot down it is like the turbo doesn't kick in I have no warning lights after a few days it started kangarooing when pulling away

So I had it plugged in at a friends garage and he for example a regeneration no difference, but the next day I pulled off in the morning and loads of power drove to work the whole way with power until the last 5 minutes really low power over the next few days it would have power then go

I changed the oil, oil filter, air filter and fuel filter no different, back on the computer and dpf pressure error code so service reset and clear codes but no difference again next day and power was back but didn't last

So I bought a new dpf and fitted it yesterday reset everything but still the same

Please help

New oil
New filters
New dpf
No warning lights
No power

Sorry to rant on please help

 

What are the exact fault codes you are getting?

 

P242f

p242f

p2458

 

DTC P242F

Diesel particulate filter restriction-soot accumulation

DETECTION CONDITION
• The PCM calculates diesel particulate filter soot accumulation based on the exhaust gas pressure sensor signal. If the PCM calculates that soot accumulation amount is more than 11 g/L {0.69 Ib/ft3}, the PCM determines that the diesel particulate filter soot accumulation excessive.
Diagnostic support note
• MIL illuminates if PCM detects the above malfunctioning condition in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
POSSIBLE CAUSE
• Exhaust gas pressure sensor piping restriction and/or damaged
• Diesel particulate filter restriction and/or damaged
• PCM malfunction


DTC P2458

Diesel particulate filter regeneration duration

DETECTION CONDITION
• The PCM calculates diesel particulate filter soot accumulation based on the exhaust gas pressure sensor signal. If the PCM calculates that soot accumulation amount is more than 8 g/L {0.50 Ib/ft3}, the PCM determines the diesel particulate filter regeneration duration.
Diagnostic support note
• The FREEZE FRAME DATA is not available.
• The DTC is stored in the PCM memory.
POSSIBLE CAUSE
• Exhaust gas pressure sensor piping restriction and/or damaged
• Diesel particulate filter restriction and/or damaged
• PCM malfunction