167-B1527-12

Group:
Bulletin No.:
Issue Date:
TECHNICAL
0-General
SB-15-030
07-7-2015
SERVICE BULLETIN
14MY-15MY DTC U02A2 DEF SENSOR COMMUNICATION ERROR
OVERVIEW
On subject vehicles, the MIL (Malfunction Indicator Lamp) may illuminate with DTC (Diagnostic Trouble Code)
U02A2 stored in the engine ECU. This may be due to a malfunction of the DEF (Diesel Exhaust Fluid) tank
sensor assembly. Perform the diagnostic procedure for DTC U02A2 as outlined by the Workshop Manual
(DEF SCR System Section for Conventional Vehicles, Engine Troubleshooting Section for COE Vehicles). If
the diagnostic procedure leads to DEF tank sensor replacement, a more robust DEF tank sensor has been
made available.
NOTE: This procedure is provided as technical information and is not an authorization for a warranty repair.
SUBJECT VEHICLES
14MY-15MY Conventional Trucks (238, 258, 268 or 338) and 14MY-15MY COE (Cab Over Engine) Trucks (195,
195h).
BEFORE YOU BEGIN:
- Read and understand all instructions and procedures before you begin the work.
- Read and follow all WARNINGS and NOTICES set forth in this publication. These alerts help to avoid damage
to components, serious personal injury, or both.
- Park the vehicle on a flat, level and solid surface and apply the parking brake.
- Place the gear shift lever in "Neutral" or "N”.
- Confirm the engine is stopped, the ignition switch is in the off (LOCK) position, and the key is removed.
- Wear safety glasses to prevent eye injuries.
- Place wheel chocks in front of and behind all the wheels to prevent the vehicle from moving.
PARTS
APPLICATION
PART NUMBER
PART DESCRIPTION
QUANTITY
14MY/15MY
Conventional
SG400E0071
DEF Tank Sensor
1
14MY COE
15MY COE
SG400E0071
SG400E0091
DEF Tank Sensor
DEF Tank Sensor
1
1
Page 1 of 4
Vendor Ref.: HMM-150707-J1
Group:
Bulletin No.:
Issue Date:
TECHNICAL
0-General
SB-15-030
07-7-2015
SERVICE BULLETIN
VEHICLE PREPARATION:
1. Park the vehicle on level ground.
2. Confirm the engine is stopped, the
ignition switch in the off (LOCK) position
and the key is removed.
3. Apply the parking brake.
Page 2 of 4
Vendor Ref.: HMM-150707-J1
Group:
Bulletin No.:
Issue Date:
TECHNICAL
0-General
SB-15-030
07-7-2015
SERVICE BULLETIN
4. Chock the front wheels.
REPAIR PROCEDURE - CONVENTIONAL
1. Remove and discard the DEF tank sensor assembly as outlined by the Engine
Workshop Manual beginning on page EN10-12. Install a new DEF tank sensor (Part No.
SG400E0071) into the DEF tank as outlined by the Engine Workshop Manual. Clear the
DTC and validate that the MIL remains off after the repair is complete.
REPAIR PROCEDURE - COE
1. Remove and discard the DEF tank sensor assembly as outlined by the Engine
Workshop Manual beginning on page 11-84. Install a new DEF tank sensor (14MY Part
No. SG400E0071, 15MY Part No. SG400E0091) into the DEF tank as outlined by the
Engine Workshop Manual. Clear the DTC and validate that the MIL remains off after the
repair is complete.
Page 3 of 4
Vendor Ref.: HMM-150707-J1
Group:
Bulletin No.:
Issue Date:
TECHNICAL
0-General
SB-15-030
07-7-2015
SERVICE BULLETIN
NOTE: This procedure is provided as technical information and is not an authorization for a warranty repair.
CLAIM APPLICATION
* Reimbursable in accordance within the terms and policies of the Hino Truck limited warranties.
Conventional Vehicles
a) Labor Charge: 0.9 Hrs
b) Warranty Code: 86664
c) Trouble Code: 43
d) Operation Code: 86612ARE
e) Part Number: SG400E0070
COE Vehicles
a) Labor Charge: 0.6 Hrs
b) Warranty Code: 86664
c) Trouble Code: 43
d) Operation Code: 86612ARE
e) Part Number: SG400E0090
Page 4 of 4
Vendor Ref.: HMM-150707-J1