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Trouble code identification
Flash
Fault location Probable cause
type
12 Start and end of diagnosis - some models -
10 Engine control module (ECM) - coding ECM incorrectly programmed
Heated oxygen sensor (HO2S)/oxygen sensor (O2S) -
13 Wiring, HO2S/O2S, ECM
open circuit
Engine coolant temperature (ECT) sensor - voltage
14 Wiring short to earth, ECT sensor, ECM
low
Engine coolant temperature (ECT) sensor - voltage
15 Wiring short to positive, ECT sensor, ECM
high
16 Knock sensor (KS) 1 - signal Wiring, KS
17 Knock sensor (KS) 2 - signal Wiring, KS
18 Engine control module (ECM) - KS control Internal KS control failure
19 Engine speed (RPM) sensor - incorrect signal Wiring, RPM sensor, reluctor ring, ECM
21 Throttle position (TP) sensor - voltage high Wiring short to positive, TP sensor, ECM
22 Throttle position (TP) sensor - voltage low Wiring short to earth, TP sensor, ECM
23 Knock sensor (KS) - KS control ECM
24 Vehicle speed sensor (VSS) - no signal Wiring, VSS, ECM
25 Injector 1 - except Motronic M1.5 - voltage high Wiring short to positive, injector, ECM
25 Injectors - Motronic M1.5 - voltage high Wiring short to positive, injectors, ECM
26 Injector 2 - voltage high Wiring short to positive, injector, ECM
27 Injector 3 - voltage high Wiring short to positive, injector, ECM
28 Injector 4 - voltage high Wiring short to positive, injector, ECM
29 Injector 5 - voltage high Wiring short to positive, injector, ECM
31 Engine speed (RPM) sensor - no signal Wiring, RPM sensor, engine not running
32 Injector 6 - voltage high Wiring short to positive, injector, ECM
33 Exhaust gas recirculation (EGR) solenoid - voltage low Wiring open circuit/short to earth, EGR solenoid
Exhaust gas recirculation (EGR) solenoid - voltage
34 Wiring short to positive, EGR solenoid
high
37 Engine control module (ECM) - MIL control Wiring open circuit/short to earth, ECM
Heated oxygen sensor (HO2S)/oxygen sensor (O2S) -
38 Wiring short to earth, ECM
voltage low
Heated oxygen sensor (HO2S)/oxygen sensor (O2S) -
39 Wiring short to positive, ECM
voltage high
41 First gear position switch - voltage low Wiring short to earth, first gear position switch
42 First gear position switch - voltage high Wiring short to positive, first gear position switch
Heated oxygen sensor (HO2S)/oxygen sensor (O2S) - Wiring, ECT/IAT sensor, MAF/VAF sensor, CTP switch, fuel
44
weak mixture system, ECM
Heated oxygen sensor (HO2S)/oxygen sensor (O2S) - Wiring, ECT/IAT sensor, MAF/VAF sensor, CTP switch, fuel
45
rich mixture system, ECM
Wiring open circuit/short to earth, fuse, AIR pump relay, AIR
46 Secondary air injection (AIR) pump relay - voltage low
solenoid, AIR pump
Manufacturer: Opel/Vauxhall Model: Omega-B 2,5 © Autodata Limited 2007
Engine code: X25XE Output: 125 (170) 6000 2008-07-12
Tuned for: R-Cat Year: 1994-00 V6.410-
Wiring open circuit/short to positive, fuse, AIR pump relay,
47 Secondary air injection (AIR) pump relay - voltage high
AIR solenoid, AIR pump
48 Battery supply voltage - low Wiring, battery, ECM relay, ECM
49 Battery supply voltage - high Alternator, regulator
51 Engine control module (ECM) - incorrect programming Wiring, ECM
52 Engine control module (ECM) - MIL control Wiring short to positive, ECM
53 Fuel pump relay - voltage low Wiring short to earth, fuel pump relay, fuel pump, ECM
54 Fuel pump relay - voltage high Wiring short to positive, fuel pump relay, fuel pump, ECM
55 Engine control module (ECM) - defective ECM
56 Idle air control (IAC) valve - voltage high Wiring short to positive, IAC valve, ECM
57 Idle air control (IAC) valve - voltage low Wiring short to earth, IAC valve, ECM
Evaporative emission (EVAP) canister purge valve -
61 Wiring short to earth, EVAP canister purge valve, ECM
voltage low
Evaporative emission (EVAP) canister purge valve -
62 Wiring short to positive, EVAP canister purge valve, ECM
voltage high
Wiring short to positive, intake manifold air control solenoid,
63 Intake manifold air control solenoid - voltage high
ECM
65 Mixture adjustment resistor - voltage low Wiring short to earth, ECM
66 Mixture adjustment resistor - voltage high Wiring short to positive, ECM
67 Closed throttle position (CTP) switch - voltage low Wiring, CTP switch, ECM
69 Intake air temperature (IAT) sensor - voltage low Wiring short to earth, IAT sensor, ECM
71 Intake air temperature (IAT) sensor - voltage high Wiring short to positive, IAT sensor, ECM
72 Wide open throttle (WOT) switch - voltage low Wiring short to earth, WOT switch, ECM
Mass air flow (MAF) sensor/volume air flow (VAF)
73 Wiring short to earth, MAF/VAF sensor, ECM
sensor - voltage low
Mass air flow (MAF) sensor/volume air flow (VAF)
74 Wiring short to positive, MAF/VAF sensor, ECM
sensor - voltage high
75 AT torque control, signal - voltage low Wiring open circuit
76 AT torque control, signal - continuous Wiring, ECM, TCM
79 Traction control - signal voltage low Wiring, traction control module
81 Injector 1 - except Motronic M1.5 - voltage low Wiring short to earth, injector, ECM
81 Injectors - Motronic M1.5 - voltage low Wiring short to earth, injectors, ECM
82 Injector 2 - voltage low Wiring short to earth, injector, ECM
83 Injector 3 - voltage low Wiring short to earth, injector, ECM
84 Injector 4 - voltage low Wiring short to earth, injector, ECM
85 Injector 5 - voltage low Wiring short to earth, injector, ECM
86 Injector 6 - voltage low Wiring short to earth, injector, ECM
87 AC control signal - voltage low Wiring short to earth, AC cut-off relay, ECM
88 AC control signal - voltage high Wiring short to positive, AC cut-off relay, ECM
91 Oxygen sensor heater - voltage high Wiring short to positive, ECM
93 Camshaft position (CMP) sensor - voltage low Wiring short to earth, CMP sensor
94 Camshaft position (CMP) sensor - voltage high Wiring short to positive, CMP sensor
95 Fuel pressure regulator control solenoid - voltage low Wiring short to earth, fuel pressure regulator control solenoid
Wiring short to positive, fuel pressure regulator control
96 Fuel pressure regulator control solenoid - voltage high
solenoid
97 Traction control - signal voltage high Wiring, traction control module
98 Oxygen sensor heater - voltage low Wiring short to earth, ECM
113 Turbocharger (TC) pressure - out of limits Wiring, TC, TC wastegate regulating valve, ECM
Turbocharger (TC) pressure - idling control limit
114 Wiring, TC wastegate regulating valve, ECM
exceeded
Turbocharger (TC) pressure - full load control limit not
115 Turbocharger, ECM
reached
Turbocharger (TC) pressure - full load control limit
116 Wiring, TC wastegate regulating valve, ECM
exceeded
Manufacturer: Opel/Vauxhall Model: Omega-B 2,5 © Autodata Limited 2007
Engine code: X25XE Output: 125 (170) 6000 2008-07-12
Tuned for: R-Cat Year: 1994-00 V6.410-
Turbocharger (TC) wastegate regulating valve -
117 Wiring short to earth, TC wastegate regulating valve, ECM
voltage low
Turbocharger (TC) wastegate regulating valve -
118 Wiring short to positive, TC wastegate regulating valve, ECM
voltage high
Manifold absolute pressure (MAP) sensor -
119 Wiring, MAP sensor, air leak, hose blocked
range/performance problem
Manifold absolute pressure (MAP) sensor, signal -
125 Wiring, MAP sensor, intake system
below lower limit
Manifold absolute pressure (MAP) sensor, signal -
126 Wiring, MAP sensor, intake system
above upper limit
Exhaust gas recirculation (EGR) valve position sensor
129 Wiring open circuit/short to earth, EGR valve position sensor
- voltage low
Exhaust gas recirculation (EGR) valve position sensor
131 Wiring short to positive, EGR valve position sensor
- voltage high
Exhaust gas recirculation (EGR) valve position sensor
132 Wiring, EGR valve position sensor
- incorrect signal
135 Engine control module (ECM) - MIL control Wiring open circuit/short to earth, ECM
136 Engine control module (ECM) - unknown output error ECM internal short to positive
137 Engine control module (ECM) - temperature high -
138 Manifold absolute pressure (MAP) sensor - voltage low Wiring short to earth, MAP sensor
Manifold absolute pressure (MAP) sensor - voltage
139 Wiring short to positive, MAP sensor
high
143 Immobilizer control module - programming Immobilizer control module incorrectly/not programmed
144 Immobilizer control module - no signal Immobilizer control module
145 Immobilizer control module - incorrect signal Immobilizer control module
Manufacturer: Opel/Vauxhall Model: Omega-B 2,5 © Autodata Limited 2007
Engine code: X25XE Output: 125 (170) 6000 2008-07-12
Tuned for: R-Cat Year: 1994-00 V6.410-