Vauxhall Workshop Service and Repair Manuals > Omega B > J Engine and Engine Aggregates | Fuel Injection Systems | Motronic M 1.5.4 | Description and Operation | Motronic M 1.5.4 (20 SE, X 20 SE) Trouble Code Table

Trouble Code Table

Trouble Code	Information Sensor	Cause of Fault
10	EEPROM	not programmed
13	O₂ sensor	Lead interruption
14	Coolant temperature sensor	Voltage low
15	Coolant temperature sensor	Voltage high
16	Knock sensor	Signal missing I short circuit
18	Knock control module	Defective
19	Inductive pulse pick - up	Incorrect engine speed signal
21	Throttle valve potentiometer	Voltage high
22	Throttle valve potentiometer	Voltage low
24	Odometer frequency sensor	No signal
25	Injector 1	Voltage high
26	Injector 2	Voltage high
27	Injector 3	Voltage high
28	Injector 4	Voltage high
31	Inductive pulse pick - up	No engine speed signal
33	Exhaust gas recirculation valve	Voltage low
34	Exhaust gas recirculation valve	Voltage high
38	O₂ sensor loop	Voltage low
39	O₂sensor loop	Voltage high
48	Battery	Voltage low
49	Battery	Voltage high
52	Telltale	Voltage high
53	Fuel pump relay	Voltage low
54	Fuel pump relay	Voltage high
55	Control unit	Defective
56	Idle air control	Voltage high
57	Idle air control	Voltage low
61	Fuel tank vent valve	Voltage low
62	Fuel tank vent valve	Voltage high
69	Intake air temperature sensor	Voltage low
71	Intake air temperature sensor	Voltage high
73	Hot film mass air flow meter	Voltage low
74	Hot film mass air flow meter	Voltage high
75	Torque control	Voltage low
76	Torque control	Engagement period too long
81	Injector 1	Voltage low
82	Injector 2	Voltage low
83	Injector 3	Voltage low
84	Injector 4	Voltage low
87	AC cut-off relay	Voltage low
88	AC cut-off relay	Voltage high

Note:

Modifications relative to the Motronic M 1.5.2 from the C 20 NE engine in the Astra - F are printed in bold face.

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