HONDA 08 VERY POOR FUEL ECONOMY

I just bought the car used 5 days ago, put 35 litres of fuel and in just 145 km the tank is empty, with about 4 km/litre fuel consumption. Actually the engine is running somewhat horrible, had the following dtcs now (there were others I took care of)
i P0011 VTC system malfunction Current
ii P0138 HO2S S2 circuit high voltage Temporary
iii P0303 misfire No 3 cylinder Temporary
These are the datastream PIDS I recorded today

IDLE RPM (1050) 2500 RPM
AF FB (STFT) 1.02 0.94
AF FB (LTFT) 0.95 0.95
AF FB CMD 0.987 0.965
AF heater 28.5% 25.50%
AF Lambda 1.01 1.04
AF Lambda CMD 1.01 1.03
AF Sensor 0.01mA -0.04 mA
AF Sensor impedance 38 ohm 38 ohm
AF sensor signal minus 1.80 V 1.80 V
AF sensor signal plus 2.20 V 2.20 V
A/F Ratio 14.68 - 15.32 15.5
CATA monitor condition OK OK
Catalyst temperature 675.0 deg celcius 652.8 degree celcius
CKP NO Pulse 0.00 0.00
CKP Noise 0.00 0.00
CKP Pulsar F/B learn Completed Completed
CMP 2 NO Pulse 0 0
CMP 2 Noise 0 0
CMP B NO Pulse 0 - 6.00 4.00
CMP B NO Noise 0.00 0.00
CMP CTRL 0.00 deg 0.00 deg
CMP CTRL CMD 0.00 deg 0.00 deg
ECT Sensor 1 68 deg celcius 77 deg celcius
ECT Sensor 2 63 deg celcius 74 deg celcius
Fan CTRL ON ON
FSS Closed Closed
FTP Sensor - 0.13 - 65 Kpa - 0.52 Kpa
FTP Sensor (fine) - 66.3 - 611.75 pa - 505.25 pa
Fuel Cap off off
Fuel injector 3.24 - 4.24 ms 2.54 ms
HO2S (AF) Sensor heater ON ON
HO2S heater duty 0.53 - 0.61 V 1.43 V
HO2S S2 heater ON ON
HO2S S2 heater current 1.03 A 1.05 A
IAT Sensor 56 deg celcius 64 deg celcius
Idle learn not completed not completed
Idle target 800 rpm 800 rpm
Idle target TH 3.44 deg 4.70 deg
MAF Sensor 1.47 V 1.67 V
MAF Sensor 5.34 g/s 9.13 g/s
MAP Sensor 1.22 - 1.29 V 0.92 V
MAP Sensor 39 - 50 Kpa 29 Kpa
Rel TP Sensor 3.18 - 4.24 deg 5.65 deg
Spark Advance 0.00 - (- 0.50) deg 43.0 deg
Target TH VLV 3.50 deg 5.62 deg
Throttle VLV 3.50 - 4.15 deg 5.71 deg
TP Sensor 14.51 % 15.69 %
TP Sensor A 0.73 V 0.82 V
TP Sensor B 1.59 V 1.65 V
VTC Status off ON

Some other data while driving
VSS 90 KM/HR
Engine RPM 2000
Fuel injector 8.20 ms
Spark advance 18 deg
MAF 2.33 V
MAF 26.2 g/s
MAP 2.47 V
MAP 85 Kpa
STFT 1.01
LTFT 0.89
LAMBDA 1.02
AF Sensor current - 0.03 mA
AF Ratio 15.40
HOS2 S2 1.43 V
TP Sensor 24 %
TP Sensor A 1.25 V
TP Sensor B 2.0 V
VTC OFF

Work the P0011 for starters.

Hi Sagir.iliyasu.adamu

What engine size is it?

Map sensor looks high and Maf sensor (depending on size engine). Also look at actual rpm vs desired rpm. PCM is not getting the desired. that drives me to a vacuum leak?

P0011 is related. As cj1 mentioned.

Engine is a 2.4 litre

cj1 wrote: Work the P0011 for starters.

thanks will look into that.

Hi everyone, I have now taken care of the P0011dtc by replacing the camshaft actuator with a used one and then got P1009 dtc which was also taken care of by cleaning the vtc solenoid valve and the screen.
Also there was a P0138 that was taken care of, it happened that one of the 02 pins was not fully connecting in the connector. So now there was no dtc related to engine after been driven for 2 days.
However, the Map reading is still high getting between 34 - 60 kpa, I have swapped the Map sensor from another car but still was getting the same result, so Map sensor is not the issue.
Please I have attached some pictures of cam-crank signal when the car was running and seems the ignition timing was changing and also the cam-crank correlation doesn't seems to be correct when compared to known good I came across.
Could it be the timing chain is shifting when engine is running.

I cannot see any change in cam/crank correlation and spark timing could be related to emission control (if don't change load conditions).

Map readings could be related to engine temp out operation point, wear in valve seats, dirty egr valve, open evap valve, broken hoses.

Can you post new PID's with after changes?

I would do a compression test or cylinder leak down test --- use whatever type of compression test you can do.
Also check for a blocked cat.

Still on same car, someone can help me analyse these in cylinder pico capture and tell the problems. I am inexperience and so still learning.