Toyota Repository

[SlowNStock]

Hi all! I have a 2017 flex tundra with a whipple and am having all kinds issues, It was tuned by a very well known tundra guy in dallas and we have upated the file several times with no luck... keep setting a p219a code and have looked for the reason high an low! just hoping for a bit of advise! here is a log when the code set. and the current tune.

There's nothing in the current tune - nor in the past changelog - that is causing this particular issue.

You need to identify which cylinder in Bank 1 is experiencing a problem - pulling the plugs can give a hint, as the plug from the problem cylinder will often stand out from the rest.

Here is a series of diagnostic tests that doesn't require any extra equipment (scope, multimeter, etc.) if you don't get a clear indication from the plugs:

Verify everything is torqued to spec, check for any intake leaks
If no intake leaks, verify no exhaust leaks
If no exhaust leaks, swap Bank 1 and Bank 2 ignition coils
If CEL does not change to P219B, swap Bank 1 and Bank 2 fuel injectors
If CEL does not change to P219B, swap Bank 1 and Bank 2 O2 sensors

The CEL will follow the problem component - for example, if an injector on Bank 1 is the source, when you move it to Bank 2 the CEL will begin to report on Bank 2 (P219B)

A leak at the intake gasket from the install or a bad (out of spec) injector are most often the culprit.

[bj-indy]

There's nothing in the current tune - nor in the past changelog - that is causing this particular issue.

You need to identify which cylinder in Bank 1 is experiencing a problem - pulling the plugs can give a hint, as the plug from the problem cylinder will often stand out from the rest.

Here is a series of diagnostic tests that doesn't require any extra equipment (scope, multimeter, etc.) if you don't get a clear indication from the plugs:

Verify everything is torqued to spec, check for any intake leaks
If no intake leaks, verify no exhaust leaks
If no exhaust leaks, swap Bank 1 and Bank 2 ignition coils
If CEL does not change to P219B, swap Bank 1 and Bank 2 fuel injectors
If CEL does not change to P219B, swap Bank 1 and Bank 2 O2 sensors

The CEL will follow the problem component - for example, if an injector on Bank 1 is the source, when you move it to Bank 2 the CEL will begin to report on Bank 2 (P219B)

A leak at the intake gasket from the install or a bad (out of spec) injector are most often the culprit.

Thanks for the reply! So far I have replaced the injectors with a new set of dw650cc, pulled the blower back off to check and replace the gaskets, pulled all 8 plugs and replaced, checked inside with borescope, pulled valve cover to check for broken valve springs, swapped coil banks, replaced all 4 o2 sensors with new oem, new maf sensor.. no change at all.. I guess its just going to have to break to find the problem... the tune keeps going rich for some reason as well, alcohol content stays 0 or super low all the time too... Its been quite the headache!