ENGINE (J05E)/TROUBLESHOOTING2–820
DTC: P1601
EN01H02127030602016138
P1601: Fuel injector adjustment data error
INFORMATION
1. Technical description
• The fuel injection rate is controlled by operation of the injector magnetic valve according to the injector valve-open-
ing interval instructions from the engine ECU. In order to correct for injector manufacturing variations, however, a
variation correction value (injector correction value) is measured, and written into the engine ECU, during the injec-
tor manufacturing process.
<Description of malfunction>
• Faulty injector correction value is detected.
2. DTC set condition
(1) DTC detection condition
• Calibration data (QR codes) are not written.
• Calibration data are 127 or more.
• Calibration data are -128 or less.
• Improper checksum of calibration data
• EEPROM memory failure
(2) Judgement criteria
• Either of these conditions described above remains for 3 seconds or longer.
3. Reset condition
• After restoration to normal condition.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
DST-i
Engine ECU
Connector
QR CODE reader
Computer
New injector
Engine type code
QR CODE
QR CODE
Injector
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