P1155 – Hyundai DTC

Hyundai DTC P1155 – Electronic throttle system (ETS) – malfunction

DTC P1155 meaning on Hyundai

The DTC P1155 code for Hyundai refers to a malfunction in the Electronic Throttle System (ETS). This system controls the throttle opening electronically rather than mechanically.

Hyundai DTC P1155 symptoms

Common symptoms of DTC P1155 on a Hyundai may include:

  • Reduced engine power
  • Engine stalling
  • Difficulty accelerating
  • Check Engine Light illuminated

Hyundai DTC P1155 causes

The potential causes of DTC P1155 on a Hyundai can include:

  • Throttle position sensor malfunction
  • Electronic throttle control unit failure
  • Wiring or connector issues in the ETS circuit

Hyundai DTC P1155 seriousness

DTC P1155 should be addressed promptly as it can lead to drivability issues and potentially unsafe driving conditions. Ignoring this code may result in further damage to the vehicle.

How to diagnose DTC P1155 on Hyundai

To diagnose DTC P1155 on a Hyundai, a mechanic may perform the following steps:

  1. Use a diagnostic scanner to retrieve the trouble codes
  2. Inspect the throttle position sensor and wiring for any visible damage
  3. Test the electronic throttle control unit for proper function

How to fix DTC P1155 on Hyundai

To fix DTC P1155 on a Hyundai, the following steps may be taken:

  1. Replace the faulty throttle position sensor if found defective
  2. Repair or replace any damaged wiring or connectors in the ETS circuit
  3. If the electronic throttle control unit is faulty, it may need to be replaced

How to erase DTC P1155 on Hyundai

To erase the DTC P1155 code on a Hyundai, the following steps can be followed:

  1. Use a diagnostic scanner to clear the trouble codes
  2. After making the necessary repairs, drive the vehicle to see if the code returns
  3. If the issue has been resolved, the Check Engine Light should turn off

Recommended tools for Hyundai diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.