4HK1
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Isuzu truck N-series fault codes
Diagnostic flash codes for Isuzu engines 4HK1 and 4JJ1
Fault code
Flash code
DTCs description
P0016
16
inconsistency of crankshaft position sensor's signal and camshaft.
P0045
33
P0079
38
P0080
38
P0087
225
overpressure in the fuel distribution line
P0088
118
overpressure in the fuel distribution line
P0089
151
overpressure in the fuel distribution line
P0091
247
defective gauge or sensor circuit fuel adjustment
P0092
247
defective gauge or sensor circuit fuel adjustment
P0093
227
low pressure in the fuel distribution line
P0101
92
mass air flow sensor voltage does not match the calculated value
P0102
91
mass air flow sensor voltage out of range
P0103
91
mass air flow sensor voltage out of range
P0107
32
mass air flow sensor voltage does not match the calculated value
P0108
32
mass air flow sensor voltage does not match the calculated value
P0112
22
P0113
22
P0116
23
Faulty coolant temperature sensor
P0117
23
Coolant temperature sensor out of range
P0118
23
Coolant temperature sensor out of range
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