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P219A with no other codes

ZacharyH
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ZacharyH New Member

ZacharyH

Posted
Posted

I have a 2013 GMC Sierra with a 5.3L V8 I have a P219A code I know it can be the O2 sensors, the fuel injector, or a vac leak but i'm not a rich person so I can't just buy all the parts just because so i'm hoping someone can help me pin down the most likely part to go for.

Problems:

     MIL P219A

     Little hiccups here and there

     Lost of fuel MPG use to average ~ 17-19 MPG now ~ 10-13 MPG HWY

Fixes so far:

     Ran fuel system cleaner

     Cleaned MAF sensor

     New filters

     Tried different fuel types

 

OBD2 Freeze Frame Data:

Parameter Description Results
DTC that caused required freeze frame data storage P219A
Fuel Sys 1 CL
Fuel Sys 2 CL
Calc Load 66.3 %
ECT 190 °F
STFT B1 -2.3 %
LTFT B1 -0.8 %
STFT B2 4.7 %
LTFT B2 -1.6 %
Fuel Pres 44 psi
MAP 22 inHg
Eng RPM 2037
Veh Speed 80 mph
Spark Adv 37.0 °
IAT 48 °F
MAF 6.23 lb/min
TPS 39.2 %
O2S B1 S1 0.69 V
STFT B1 S1 -2.3 %
O2S B1 S2 0.66 V
STFT B1 S2 99.2 %
O2S B2 S1 0.08 V
STFT B2 S1 4.7 %
O2S B2 S2 0.66 V
STFT B2 S2 99.2 %
Run Time 290 sec
Command EVAP 100.0 %
Fuel Level 78.0 %
Warm-up DTC Clr 1
Clr Dist 11 miles
EVAP_VP -3.6 InH2O
BARO 25 inHg
CAT Te 11 1562 °F
CAT Te 21 1562 °F
ECU Volts 14.32 V
LOAD Value 43.9 %
EQ Ratio 1.00
Rel TPS 25.1 %
Ambient 45 °F
TPS B 38.8 %
ACC Pedal D 19.2 %
ACC Pedal E 9.4 %
Command TAC 35.7 %
FUEL_TYP NONE
ALCH_PCT 11.0 %

 

Any help would be great.

  • Like 1
CamGTP Senior Enthusiast

CamGTP

Posted
Posted

The free test would be pretty simple. Swap the upstream o2 sensors side to side.

 

If the code changes to a P219B, then that sensor is likely at fault. Or if it gives a code for bank 2 after the o2 sensor swap.

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Not on vehicles with a fuel pump control module. All flex fuel trucks of that era have fuel pump control modules that vary the fuel pressure. Under low load situations the fuel pressure will be in the 40's and only jump to around 58-60 under heavy throttle.

toohi2cu2 New Member

toohi2cu2

Posted
Posted

The data shows o2 sensor O2S B1 S2 totally different measurement from the other 2, could that sensor be the problem?

ZacharyH New Member

ZacharyH

Posted
  • Author
Posted

Sorry for the late response but I tried to swap the upstream O2 sensors and the and the problem is still there but did seem to take 2 days before I got the check engine light that's why I haven't responded yet still have p219a

  • 1 year later...
swathdiver Senior Enthusiast

swathdiver

Posted
Posted
On 2/20/2022 at 3:32 PM, ZacharyH said:

I have a 2013 GMC Sierra with a 5.3L V8 I have a P219A code I know it can be the O2 sensors, the fuel injector, or a vac leak but i'm not a rich person so I can't just buy all the parts just because so i'm hoping someone can help me pin down the most likely part to go for.

Problems:

     MIL P219A

     Little hiccups here and there

     Lost of fuel MPG use to average ~ 17-19 MPG now ~ 10-13 MPG HWY

Fixes so far:

     Ran fuel system cleaner

     Cleaned MAF sensor

     New filters

     Tried different fuel types

 

OBD2 Freeze Frame Data:

Parameter Description Results
DTC that caused required freeze frame data storage P219A
Fuel Sys 1 CL
Fuel Sys 2 CL
Calc Load 66.3 %
ECT 190 °F
STFT B1 -2.3 %
LTFT B1 -0.8 %
STFT B2 4.7 %
LTFT B2 -1.6 %
Fuel Pres 44 psi
MAP 22 inHg
Eng RPM 2037
Veh Speed 80 mph
Spark Adv 37.0 °
IAT 48 °F
MAF 6.23 lb/min
TPS 39.2 %
O2S B1 S1 0.69 V
STFT B1 S1 -2.3 %
O2S B1 S2 0.66 V
STFT B1 S2 99.2 %
O2S B2 S1 0.08 V
STFT B2 S1 4.7 %
O2S B2 S2 0.66 V
STFT B2 S2 99.2 %
Run Time 290 sec
Command EVAP 100.0 %
Fuel Level 78.0 %
Warm-up DTC Clr 1
Clr Dist 11 miles
EVAP_VP -3.6 InH2O
BARO 25 inHg
CAT Te 11 1562 °F
CAT Te 21 1562 °F
ECU Volts 14.32 V
LOAD Value 43.9 %
EQ Ratio 1.00
Rel TPS 25.1 %
Ambient 45 °F
TPS B 38.8 %
ACC Pedal D 19.2 %
ACC Pedal E 9.4 %
Command TAC 35.7 %
FUEL_TYP NONE
ALCH_PCT 11.0 %

 

Any help would be great.

 

Have you changed any of the oxygen sensors?  Aftermarket sensors do not play nice with the computer system.  Use GM OE only, not even Denso unless it came in the ACDelco/GM box.

 

MAP sensor readings at idle ought to be between 19-42 kpa.  What are your LTFTs at idle once warmed up?

 

Have you inspected the spark plugs?  Does the crankcase oil smell like fuel?  Have you triple checked for vacuum leaks on  and around the intake manifold and brake booster?

  • 6 months later...

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