DTC Description for P0401 and P1529
Group: ENGINE ELECTRICALNumber: 99-36-001
Date: JANUARY, 1999
Model: 1999 SONATA
Subject: 1999 SONATA DIAGNOSTIC TROUBLE CODE DESCRIPTION FOR P0401 & P1529
DTC CODE P0401:
The HDS scan tool's description for this code is "undocumented code."
The correct description for this code is "EGR Flow Insufficient."
When code P0401 is encountered, diagnose the EGR system. Please refer to the 1999 Sonata Shop Manual Volume 1 page FL-21 for a complete list of engine related DTC codes.
DTC CODE P1529:
The HDS scan tool's description tor this code is "Customer Snapshot (MIL Request Freeze Frame) Request VIA CAN."
The correct description for this code is "TCM MIL Request to ECM."
This code is similar to P1624 on previous model Hyundais. This code is simply to let you know that an automatic transmission related code was set, and thus should be accompanied by another code for the actual condition. Simply erase this code when the condition has been corrected.
Please make a note of this TSB at the bottom of page FL-21 in Volume 1 of the 1999 Sonata Shop Manual.