P1428: Differential Pressure Sensor - Out Of Range (Out Of Range High); Dtc: P1428 - Hino Motors HINO 155 series Workshop Manual

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DTC: P1428

P1428: Differential pressure sensor - out of range (Out of range high)

INFORMATION
1. Technical description
• It detects a difference between pressure at the inlet of the muffler and atmospheric pressure and monitors any fail-
ure or malfunction of the DPR.
<Description of malfunction>
• Exhaust pressure cannot be correctly recognized.
• Possible DPR differential pressure sensor failure or harness +B short
2. DTC set condition
(1) DTC detection condition
• Starter key "ON".
• Battery voltage is in the range of 10 V to 16 V.
(2) Judgement criteria
• Output of the DPR differential pressure sensor remains greater than 4.06 V (84.9 kPa) for 3 seconds or more.
3. Reset condition
• Immediately after normal operation is restored.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
ENGINE (J05E)/TROUBLESHOOTING
+QG
+Q6
+QF
Engine ECU
TYP 0.018A ECE
(VC)
TYP 0.001A ECF
(PEX)
TYP 0.018A ECG
(E2)
DPR differential
pressure sensor
EN01H02127030602016127
SHTS021270300691