# P1326 cel engine code. vehicle in limp mode. gas 2.4 GDI

**URL:** <https://community.cartalk.com/t/p1326-cel-engine-code-vehicle-in-limp-mode-gas-2-4-gdi/140271>\
**Category:** Maintenance/Repairs\
**Tags:** hyundai, sonata\
**Created:** [May 13, 2019, 7:22pm UTC](https://community.cartalk.com/t/p1326-cel-engine-code-vehicle-in-limp-mode-gas-2-4-gdi/140271 "2019-05-13T19:22:39Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [May 13, 2019, 7:36pm UTC](https://community.cartalk.com/t/p1326-cel-engine-code-vehicle-in-limp-mode-gas-2-4-gdi/140271/2 "2019-05-13T19:36:41Z")

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Your Snap-On scanner may not be up to date. Fault P1326 was added the the PCM via a software update to detect engine bearing failure using the knock sensor.

The system is flawed, electrical interference in the wiring can cause false alarms. An overlay wiring harness has been developed to correct the false alarms.

Here is a tread with a dozen other people with the same problem;

> [@2018 Hyundai Sonata - Wiring issue](https://community.cartalk.com/t/2018-hyundai-sonata-wiring-issue/134559):
>
> I purchased my 2018 Sonata 5/2018. I took it in for it’s 1st check up & oil change 1/22/19 @ only 4k miles. They also did an ‘update’. As I drove home, the car was losing power. Took it back to the dealer who finally determined it needed a new major harness. Still waiting for my car 2/12/19. How bad is this? Potential future problems? Other thoughts? Thanks!

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