P1529Manufacturer-specific code

P1529 Code: Transmission Control Module Request to Turn On the Warning Light (Hyundai and Kia)

On Hyundai and Kia vehicles, the P1529 code means the transmission computer has asked the engine computer to turn on the check engine light. You may notice harsh shifts or limp mode. It is not a fault by itself: it points to codes stored in the transmission module.

Severity
Medium
Can I keep driving?
Yes, but with caution
Estimated cost
$0 to $1,500
Difficulty
Easy
System
Transmission
Applies to
Depends on the manufacturer

Common in: Hyundai, Kia

Updated Reviewed by Renzo Chacca

On this page

What the P1529 code means

P1529 is a manufacturer-specific code: the 1 in the second position means each automaker defines what it means, not the generic SAE standard. The most widespread definition is the one used by Hyundai and Kia. If your vehicle is another brand, confirm the code text with a scan tool that supports that manufacturer.

ManufacturerMeaning of P1529
Hyundai and KiaTransmission control module request to turn on the warning light

On Hyundai and Kia vehicles, the transmission computer asks the engine computer to turn on the light when it stores a code of its own.

The P1529 code is not a fault in itself: it tells you there are codes stored in the transmission computer.

Before you start repairs, confirm the make, model, year and engine. With manufacturer codes, the same number can change even between engines from the same brand.

P1529 code symptoms

  • Check engine light on.
  • Possible harsh shifts or limp mode.

Likely causes of the P1529 code

  1. Codes stored in the transmission computer. This is uncommon as a standalone cause, so rule out everything else first.
  2. Communication between modules. Confirm it with the tests in the diagnosis section.

How to diagnose the P1529 code step by step

  1. Read the transmission codes with a scan tool that can access that module.

How to fix the P1529 code

  • Repair whatever the transmission codes point to.

Technical reference data

  • It is the equivalent of P0700 on other manufacturers.
  • P1xxx codes are manufacturer-specific: confirm the definition with a scan tool that supports your brand.
  • Reference values: check the manufacturer data for your vehicle.

Brand-specific notes

Do not chase this code on its own. The real answer sits in the transmission module, so a scan that can reach it is the first step.

P1529 on Hyundai and Kia

Common on the Hyundai Accent, Elantra and Tucson, and on the Kia Rio, Cerato and Sportage.

If your vehicle is another brand, check the table above for the meaning its manufacturer gives this code and confirm it with a compatible scan tool.

Frequently asked questions about P1529

What does the P1529 code mean on a Hyundai or Kia?
It means the transmission computer asked the engine computer to turn on the check engine light. You may notice harsh shifts or limp mode.
Does P1529 mean the same thing on every brand?
No. It is a manufacturer-specific code, so on other brands it may not exist or may mean something different. Confirm it with a scan tool that supports your make.
Can I drive with a P1529 code?
With caution, depending on the transmission codes. A P1529 code only tells you the transmission module has stored something, so read those codes before a long trip.
How much does it cost to fix P1529?
Roughly $0 to $1,500 on a Hyundai or Kia. The cost depends entirely on what the transmission codes turn out to be.
Will a P1529 code clear itself?
Not while the transmission module still holds its own codes. Repair what they point to, then clear everything and confirm the light stays off.
What is the most common cause of P1529?
Codes stored in the transmission computer. A communication fault between modules is rare, so rule out everything else first.

Related codes

Questions about the P1529 code

There are no questions about this code yet. Tell us about your case: vehicle, symptoms and what you have already checked.