Flat spot & DTC's

KeithOT

Old Scrote
Dec 7, 2010
114
0
Mumbles Swansea
2001 Alhambra 20VT
No engine warning light but when driving pulls smoothly to about 2500rpm then power drops & crawls up to around 4000 the takes off like a rocket up to rev limit I tried my code reader & got 2 DTC's 16795/P0411 & 17560/P1152.
17560 Bank 1 long term fueltrim Range 2 leanness lower limit exceeded
16795 Sec air inj system incorrect flow detected.

Interesting but what would cause these faults? & the flat spot?
 

Fmxvxx

Active Member
Dec 21, 2014
388
3
its a fuelling issue the codes are not maasivily informative Need to check the flowrate coming out the fuel pump may be lucky and just have a blocked fuel filter replacing that would be my first check.
 
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