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NEXON EV
X114H
DTC Troubleshooting Data
Version: 3.0
Date: 27-May-2020
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46
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.
P22E016:- DC undervoltage shutdown
Overview:
ISO Code (If applicable)
P22E016
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 if OBCOutput DC voltage is less than 171±2V
Normal Operating Condition
OBC output voltage range b/w 170V ~ 450V
Probable Trouble Area
1. Output short circuit or overload
2. Sensors error 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.
Pre-Check Points:
a) Check the OBC DC ouput pins ( HV BATT+, HV BATT-) for damage (connectors, terminals bending & rusting of pins)
b) Check the OBC DC ouput wiring harness connected to PDU for damage (connectors, terminals bending & rusting of
pins)
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 P22E016, 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