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NEXON EV
X114H
DTC Troubleshooting Data
Version: 3.0
Date: 27-May-2020
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25
Author: K Tejaswini Manasa/ Navya Krishnan/Gaurav Jha
Copyright © TATA MOTORS Ltd.
This document must not be used in anyway, such as copying and redistributing to third parties, without the consent of author.
P226142:- OBC flash read error
Overview:
ISO Code (If applicable)
P226142
Customer Symptom
NA
Fault Effect (On Vehicle)
OBC will stop charging HV battery
Lamp Status (If Any)
NA
DTC Detection Condition
This DTC gets logged for flash read error
Normal Operating Condition
Flash Read is normal
Probable Trouble Area
Flash is failed in OBC.
Healing Condition
Disconnect the gun and connect back after VCU sleep
Write up for
the system:-
The on-board charger (OBC) takes AC input and converts it to direct current to charge a HV battery. The LV supply of
OBC is from 12V battery. It requires AC HV supply voltage of 230V, 50Hz to charge the HV battery. Without the LV
supply charging is not possible. OBC communicates with HV battery through BMS.
Pre-Check Points:
KL 30
12V LV supply to OBC
KL 31
LV/Chassis ground to OBC
b) Check for 12V LV Battery Voltage is with in the range ( 7.5V to 14V)
TroubleShooting:-
Flow Diagram or table format for diagnosing the fault code
Step no
.
Description
Check Point
if YES
if NO
1
Connect the Charging Gun & switch
ON the AC supply. check for the fault
code.
Fault code P226142
is present?
Replace OBC.
Repair complete.
DTC
’
s
confirmation:-
After rectification, ensure the following points by referring OBC parameters using TML diagnostic tool before
handing over to customer.
a) Check whether the OBC can respond to the vehicle charging command by observing the Charge ON
indicator lamp on the cluster.
On-Board charger
230V AC supply
HV Battery
LV signal connector