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Isuzu truck fault codes list

ISUZU Truck Service Manuals

Read codes

1) Turn the ignition ON, without starting the engine.

2) Connect leads 4 and 6 of the diagnostic socket under the instrument panel.

3) Read the codes by the number of flashes of the indicator "CHECK ENGINE".

In the absence of malfunctions, the indicator lights up for 0.4 seconds with an interval of 3.2 seconds - the code of the norm (01) is displayed.

Isuzu truck fault codes list

Isuzu truck fault codes list.pdf

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If there is a malfunction, the indicator flashes at intervals of 0.4 seconds. The first sequence of flashes corresponds to the first number of the diagnostic code consisting of two digits.

After a pause of 1.2 seconds, a second sequence of flashes corresponding to the second number of code is output. The same code is output three times in a row with an interval of 3.2 seconds. The next fault code (if present) is similarly displayed three times in succession following the previous one. After the last code is output, the process is repeated again.

Resetting codes

1) Turn the ignition OFF.

2) Connect leads No. 4 and No. 6 of the diagnostic connector.

3) Move the gearbox control lever to a position other than "P" or "N".

4) Switch on the ignition and press the accelerator / brake pedals alternately within 3 seconds.

Fault codes

Code	System	CE
01	Norm	-
11	Speed sensor-operation, breakage or short circuit in circuit	-
13	Limit switch idling-operation, breakage or short circuit in circuit	+
14	Coolant temperature sensor-operation, breakage or short circuit in circuit	+
15	Fuel temperature sensor is functioning, open circuit or short circuit in circuit	-
21	Throttle position sensor-open circuit or short circuit in circuit	+
22	Control valve of angle injection-operation, open circuit or short circuit in circuit	+
23	Intake air temperature sensor-operation, breakage or short circuit in circuit	-
24	Absolute pressure sensor in the intake manifold-functioning, open circuit or short circuit in circuit	+
25	Adjustment resistor-open circuit or short circuit in circuit	-
26	Barometric pressure Sensor-operation, breakage or short circuit in circuit	-
27	Fuel supply control valve (FCV)-short circuit on the weight	+
31	Regulator-functioning, open circuit or short circuit in circuit	+
32	Piston position sensor injection machine-operation, breakage or short circuit in circuit	+
33	Limit switch open circuit	+
34	Dosing position sensor coupling-operation, breakage or short circuit in circuit	+
41	Crankshaft rotation speed sensor-operation, breakage or short circuit in circuit	+
42	Backup speed sensor crankshaft	-
44	Electronic control unit-error in memory	+
54	Limit switch machine piston injection (start)-open circuit	+

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