Some 2012-2014 Toyota Corolla vehicles equipped with a 2ZR-FE engine (or 2014 model with a 2ZR-FAE engine) may exhibit a MIL on with DTC P219A (bank 1 air-fuel ratio imbalance).
Note that 2014 model year Corollas now include cylinder-specific air-fuel ratio imbalance DTCs P219C – P219-F. This bulletin applies to 2012-2014 vehicles produced before the production change effective VINs.
MODEL …………. ENGINE …………… PLANT……...…. PRODUCTION CHANGE VIN
Corolla.................... 2ZR-FE.................. TMMC................. 2T1BURHE#EC178489
Corolla.................... 2ZR-FE ................. TMMMS ............. 5YFBURHE#EP140233
Corolla.................... 2ZR-FAE (2014)..... TMMMS............. 5YFBPRHE#EP140395
Corolla.................... 2ZR-FAE (2014)..... TMMC ................ 2T1BPRHE#EC179105
1. Use the Techstream to check for DTCs and confirm the condition. If misfires are present, continue to Step 2.
2. Perform cylinder leakdown test on each cylinder. Note any cylinders with high compression loss. If loss is found, listen at the exhaust, intake and crankcase to determine the source of the leakage.
3. Replace the cylinder head (including all exhaust and intake valves for the affected cylinder(s).
4. Clear all DTCs and test drive to confirm the fix.
P/N ......................... PART ........................................ QTY
11101-09310 .......... cylinder head sub-assembly..........1
04112-0T132 .......... gasket kit ............. ....................... 1
13711-0T010 .......... intake valve .................................. 2 – 8
13715-0T010 .......... exhaust valve ............................... 8
