GM Vikakoodit 1982 - 1996
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GM
82-83 2.5 L
13 Oxygen sensor circuit
14 Coolant temperature sensor voltage low
15 Coolant temperature sensor voltage high
21 TPS voltage was above 2.5 volts for 10 seconds when the MAP sensor signal showed
manifold vacuum to be 15 pounds or more with
an engine speed less than 1300 RPM.
22 TPS voltage was under 0.2 volts for 4 seconds when the engine was running.
24 Vehicle Speed sensor circuit
33 MAP sensor signal voltage was too high (low vacuum) for 5 seconds when throttle
opening was 2%.
42 The EST signal did not change when the ECM applied bypass
voltage to the ignition module.
44 Oxygen sensor lean exhaust indication.
45 Oxygen sensor rich exhaust indication.
51 PROM not reading.
55 ECM problem
GM
82-83 3.0L
13 Oxygen sensor circuit
14 Coolant temperature sensor voltage low
15 Coolant temperature sensor voltage high
21 TPS voltage was above 2.5 volts for 10 seconds when the MAP sensor
signal showed manifold vacuum to be 15 pounds or more with an engine speed
less than 1300 RPM.
23 Open or grounded M/C (mixture control) solenoid circuit.
24 Vehicle Speed sensor circuit
32 BARO sensor voltage too low
33 MAP sensor signal voltage was too high (low vacuum) for
5 seconds when throttle opening was under 2%.
35 Shorted ISC Motor Throttle Switch
41 No distributer referance signal
42 The EST signal did not change when the ECM applied bypass voltage
to the ignition module.
43 Voltage at ECM terminal "L" low.
44 Oxygen sensor circuit.
45 Oxygen sensor rich exhaust indication.
51 PROM not reading.
54 Constant High Voltage From M/C Solenoid To ECM.
55 ECM problem
GM
86 1.8L VIN J MFI
13 Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60 seconds.
Engine was at normal operating temperature and had been running
for at least 1 minute after start with a throttle
angle above 6.5%.
14 Coolant temperature sensor signal indicates a temperature
of over 275° F for 3 seconds.
15 Coolant temperature sensor signal indicates a temperature colder
than -22° F after engine had been running for 50 seconds.
21 TPS voltage was above 2.5 volts for 10 seconds when the
MAP sensor signal showed manifold vacuum
to be 15 pounds or more with an engine speed less than 1300 RPM.
22 TPS voltage was under 0.2 volts for 4 seconds
when the engine was running.
23 Manifold air temperature sensor signal showed an air temperature
below -22° F for 10 seconds.
24 When engine speed was between 1400 and 4400 RPM, the MAP
signal showed low voltage (high manifold vacuum) for at least 5 seconds.
25 Inlet air temperature sensor signal showed an air temperature over 275° F for
more than 30 seconds.
31 Manifold pressure exceeded 8 psi of boost for 2 seconds.
32 EGR open command did not change the fuel mixture when the command
was given during off idle operation. EGR opening should cause the mixture to be
slightly richer because of the low oxygen content of exhaust gas.
33 MAP sensor signal voltage was too high (low vacuum) for 5 seconds
when throttle opening was under 2%.
34 MAP sensor signal voltage was too low (high vacuum) when engine
speed was below 1200 RPM and TPS was greater than 20%.
35 Idle speed was 225 RPM above desired speed for 20 seconds.
42 The EST signal did not change when the ECM applied bypass
voltage to the ignition module.
43 Knock sensor circuit voltage was above 3.5 volts or below
1.5 volts for 5 seconds.
44 Oxygen sensor voltage was under 0.27 volts for 25 seconds of closed
loop operation.
45 Oxygen sensor voltage was over 0.75 volts for 50 seconds or more in closed
loop operation.
GM
86 1.8L VIN 0 TBI
13 Oxygen sensor voltage stays between 0.35 and 0.55 volts for
3 seconds during closed loop operation and will set code after 40 seconds
for Century and Cutlass Ciera. For the Lumina, the oxygen sensor
voltage stays between 0.35 and 0.55
volts for 60 seconds during closed loop operation and will set code after 2 minutes.
Both systems can go into open loop after 15 seconds.
14 Coolant temperature sensor signal indicates a temperature
of over 275° F for 3 seconds.
15 Coolant temperature sensor signal indicates a temperature colder
than -22° F after the engine has been running for 2 minutes.
21 TPS voltage was above 2.5 volts for 2 seconds when the MAP sensor signal showed
manifold vacuum to be 15 pounds or more under 1800 RPM.
22 TPS voltage was under 0.2 volts for 2 seconds when the engine was running.
23 Inlet air temperature sensor signal showed an air temperature of -22° F after
the engine has been running for 1 minute.
24 The following conditions must be met for 5 seconds: Throttle position
signal was less than 2% with engine speed between 1400 and 4400 RPM
and the MAP signal showed low voltage and high manifold vacuum.
Transmission was not in park or neutral.
25 Inlet air temperature sensor signal showed an air temperature over 275° F
for more than 2 seconds after the engine has been running for 5 minutes
and vehicle speed was greater than 44 MPH.
32 EGR open command did not change the fuel mixture when the command was given during
off idle operation. EGR opening should cause the mixture to be slightly
richer because of the low oxygen content of exhaust gas.
33 MAP sensor signal voltage was too high (low vacuum) for at least 5 seconds when throttle
opening was under 2%.
34 MAP sensor signal voltage was too low (high vacuum) when engine speed was under 1200
RPM or when engine speed was over 1200
RPM with throttle opening was over 20%.
35 Idle speed was over 150 RPM outside the desired engine speed commanded by the ECM.
42 The EST signal did not change when the ECM applied bypass voltage to the ignition module.
44 Oxygen sensor voltage was under 0.2 volts for 60 seconds of closed loop operation.
45 Oxygen sensor voltage was above specification. Century and Cutlass Ciera was over
0.75 volts for 50 seconds in a closed loop. Lumina was over 0.7 volts for 30 seconds
and throttle angle was between 3% and 45%.
51 PROM error.
53 Charging system voltage was greater than 16.9 volts for more than 50 seconds.
Repair charging system
GM
86 2.0L VIN P TBI
13 Oxygen sensor voltage stays between 0.35 and 0.55 volts for 3 seconds during closed
loop operation, and will set code after 40 seconds for Century and Cutlass Ciera.
For the Lumina, the oxygen sensor voltage stays between 0.35 and 0.55 volts for
60 seconds during closed loop operation and will set code after 2 minutes.
Both systems can go into open loop after 15 seconds.
14 Coolant temperature sensor signal indicates a temperature of over 275° F
for 3 seconds.
15 Coolant temperature sensor signal indicates a temperature colder than
-22° F after the engine has been running for 2 minutes.
21 TPS voltage was above 2.5 volts for 2 seconds when the MAP sensor signal showed
manifold vacuum to be 15 pounds or more under 1800 RPM.
22 TPS voltage was under 0.2 volts for 2 seconds when the engine was running.
23 Inlet air temperature sensor signal showed an air temperature of
-22° F after the engine has been running for 1 minute.M/C Solenoid Circuit Open Or
Grounded
24 Vehicle Speed Sensor Sensor/Circuit.The following conditions must be met for
5 seconds: Throttle position signal was less than 2% with engine speed
between 1400 and 4400 RPM and the MAP signal showed low voltage and high
manifold vacuum. Transmission was not in park or neutral.
275° F for more than 2 seconds after the engine has been running
for 5 minutes and vehicle speed was greater than 44 MPH.
32 EGR open command did not change the fuel mixture when the command was given during
off idle operation. EGR opening should cause the mixture to be slightly
richer because of the low oxygen content of exhaust gas.
33 MAP sensor signal voltage was too high (low vacuum) for at least 5 seconds when
throttle opening was under 2%.
34 MAP sensor signal voltage was too low (high vacuum) when engine speed was
under 1200 RPM or when engine speed was over 1200 RPM with throttle opening over 20%.
35 Idle speed was over 150 RPM outside the desired engine speed commanded by the ECM.
42 The EST signal did not change when the ECM applied bypass voltage to the ignition module.
44 Oxygen sensor voltage was under 0.2 volts for 60 seconds of closed loop operation.
45 Oxygen sensor voltage was above specification. Century and Cutlass Ciera was
over 0.750 volts for 50 seconds in a closed loop. Lumina was over
0.700 volts for 30 seconds and throttle angle was between 3% and 45%.
51 PROM error.
53 Charging system voltage was greater than 16.9 volts for more than 50 seconds.
Repair charging system
GM
1986 2.5L VIN 2 TBI
13 Oxygen sensor voltage stays between 0.35 and 0.55 volts for 3 seconds during
closed loop operation and will set code after 40 seconds for Century and Cutlass Ciera.
For the Lumina, the oxygen sensor voltage stays between 0.35 and 0.55 volts
for 60 seconds during closed loop operation and will set code after
2 minutes. Both systems can go into open loop after 15 seconds.
14 Coolant temperature sensor signal indicates a temperature of over 275° F
for 3 seconds.
15 Coolant temperature sensor signal indicates a temperature colder than
-22° F after the engine has been running for 2 minutes.
21 TPS voltage was above 2.5 volts for 2 seconds when the MAP sensor signal showed
manifold vacuum to be 15 pounds or more under 1800 RPM.
22 TPS voltage was under
0.2 volts for 2 seconds when the engine was running.
23 Inlet ATS signal showed an air temperature of -22° F after the engine has
been running for 1 minute.
24 TPS signal was less than 2% with engine speed between 1400 and 4400 RPM and the
MAP signal showed low voltage and high manifold vacuum. Transmission was not in park
or neutral.
25 Inlet ATS signal showed an air temperature over 275° F for more than 2 seconds
after the engine has been running for 5 minutes and vehicle speed was greater
than 44 MPH.
32 EGR open command did not change the fuel mixture when the command was given
during off idle operation. EGR opening should cause the mixture to be slightly
richer because of the low oxygen content of exhaust gas.
33 MAP sensor signal voltage was too high (low vacuum) for at least 5 seconds when
throttle opening was under 2%.
34 MAP sensor signal voltage was too low (high vacuum) when engine speed was
under 1200 RPM or when engine speed was over 1200 RPM with throttle opening
was over 20%.
35 Idle speed was over 150 RPM outside the desired engine speed commanded by
the ECM.
42 The EST signal did not change when the ECM applied bypass voltage to the ignition
module.
44 Oxygen sensor voltage was under 0.2 volts for 60 seconds of closed loop operation.
45 Oxygen sensor voltage was above specification. Century and Cutlass Ciera was
over 0.75 volts for 50 seconds in a closed loop. Lumina was over 0.7 volts
for 30 seconds and throttle angle was between 3% and 45%.
51 PROM error.
53 Charging system voltage was greater than 16.9 volts for more than 50 seconds.
Repair charging system
GM
86 2.8L VIN X Carb
12 ECM did not receive distributor reference pulses when cam pulses were
being received.
13 Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60 seconds
during closed loop operation after the engine had been running for 4 minutes
and the throttle angle was above 4%.
14 Coolant temperature sensor was shorted showing a high temperature after
engine had been running for 2 minutes.
15 Coolant temperature sensor was open showing a low temperature after
engine had been running for 5 minutes.
21 TPS was open showing low voltage.
22 TPS voltage was under 0.2 volts for 3 seconds when the engine was running.
23 Mixture control solenoid circuit was either open or shorted.
24 Vehicle speed sensor was out of range after vehicle had been at road speed
for 2 minutes.
32 Barometric pressure sensor circuit was low.
34 MAP sensor or vacuum sensor was open or shorted.
35 Idle speed control switch circuit was shorted showing a high TPS reading
for over 5 seconds.
41 ECM did not see any distributor reference pulses.
42 The EST signal did not change when the ECM applied bypass voltage to
the ignition module.
43 The ESC knock signal lasted too long causing the EST signal to be retarded.
44 Oxygen sensor was lean during closed loop operation after engine had been
running for 2 minutes.
45 Oxygen sensor was rich during closed loop operation after engine had been
running for 2 minutes.
51 PROM error.
53 EGR valve vacuum was incorrect.
54 Mixture control solenoid circuit was shorted and/or ECM is faulty
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