DTC P219C, P219D, P219E, P219F (1.5 L Engine)

DTC P219C  : No. 1 Cylinder Air-Fuel Ratio Variation DTC P219D  : No. 2 Cylinder Air-Fuel Ratio Variation DTC P219E  : No. 3 Cylinder Air-Fuel Ratio Variation DTC P219F  : No. 4 Cylinder Air-Fuel Ratio Variation

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• If any of the DTCs listed below are indicated at the same time as DTC P219C, P219D, P219E, and/or P219F, troubleshoot those DTCs first, then recheck for P219C, P219D, P219E, and/or P219F.

  P0130, P0133, P1172, P2195, P2237, P2238, P2243, P2245, P2251, P2252, P2A00: A/F sensor (Sensor 1)

  P0134, P0135: A/F sensor (Sensor 1) heater

  P0201, P0202, P0203, P0204: No. 1-No. 4 cylinder injector (s)

  P0300: Random misfire

  P0301, P0302, P0303, P0304: No. 1-No. 4 cylinder misfire

  P0351, P0352, P0353, P0354: No. 1-No. 4 cylinder ignition coil (s)

DTC (PGM-FI)

1. Problem verification 1 (HDS parameter)

   -1. Turn the vehicle to the ON mode.

   -2. Check the parameter (s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Fuel factor study value of No1 cylinder	0.83-1.15
   Fuel factor study value of No2 cylinder	0.83-1.15
   Fuel factor study value of No3 cylinder	0.83-1.15
   Fuel factor study value of No4 cylinder	0.83-1.15

   NOTE:  If the value of Fuel factor study valve is above the threshold, the PCM may detect an over-lean failure. If the value of Fuel factor study valve is below the threshold, the PCM may detect an over-rich failure.

   Do the current condition (s) match the threshold?

   YES 

   Go to step 2.

   NO 

   The failure is duplicated. Go to step 4.

2. On-board snapshot check:

   Check the recorded on-board snapshot parameter (s) with the HDS.

   • Fuel factor study value of No1 cylinder
   • Fuel factor study value of No2 cylinder
   • Fuel factor study value of No3 cylinder
   • Fuel factor study value of No4 cylinder

   Do the parameter (s) of the recorded on-board snapshot match the threshold shown in step 1-2?

   YES 

   Go to step 3.

   NO 

   The failure is duplicated. Go to step 4.

3. Problem verification 2

   -1. Start the engine.

   -2. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.

   -3. Test-drive the vehicle under these conditions:

   • Engine coolant temperature (ECT SENSOR 1) above 158 deg. F (70 deg. C)
   • Transmission in D
   • Drive at a steady engine speed between 1, 000-1, 200 rpm, then accelerate up to 3, 400 rpm at about 10-15 seconds, and repeat this 3 times or more if needed

   Signal	Current conditions
   	Values	Unit
   ECT Sensor 1
   Engine Speed

   -4. Check the parameter (s) below with the HDS.

   Signal	Threshold		Current conditions
   	Values	Unit	Values	Unit
   Fuel factor study value of No1 cylinder	0.83-1.15
   Fuel factor study value of No2 cylinder	0.83-1.15
   Fuel factor study value of No3 cylinder	0.83-1.15
   Fuel factor study value of No4 cylinder	0.83-1.15

   Do the current condition (s) match the threshold?

   YES 

   Intermittent failure, the system is OK at this time. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same condition with the on-board snapshot .

   NO 

   Go to step 4.

4. Engine compression check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Do the cylinder compression test .

   Is there a cylinder with lower compression than the other cylinders?

   YES 

   Repair the engine compression problem.

   NO 

   Go to step 5.

5. Valve clearance check

   -1. Inspect the valve clearance .

   Is the valve clearance OK?

   YES 

   Go to step 6.

   NO 

   Adjust the valve clearance .

6. Injector check

   -1. Exchange the injector from the problem cylinder with one from another cylinder .

   -2. Start the engine.

   -3. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.

   -4. Check under these conditions:

   • A/C off
   • All electrical loads off

   -5. Do the CYLINDER A/F TEST three times in the INSPECTION MENU with the HDS.

   CYLINDER A/F TEST

   Is an injector failure indicated at the cylinder where the injector was exchanged?

   YES 

   Replace all injector as a set .

   NO 

   Go to step 7.

7. Intake and exhaust manifold visual check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Check for carbon build-up in the intake manifold and the exhaust manifold.

   Is there carbon build-up in the intake manifold and/or exhaust manifold?

   YES 

   Check the engine for oil leaks. If needed, repair the engine, also remove the carbon.

   NO 

   Intermittent failure, the system is OK at this time. Check the engine for oil leaks.