1990 5.7L Fuel Injection, VIN J |
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 2 minutes after start with a throttle angle
above 5%. |
14 |
Coolant temperature sensor signal indicates a
temperature of over 266° F. |
15 |
Coolant temperature sensor signal indicates a
temperature colder than -26° F. |
16 |
DIS fault line voltage was low for 2 seconds when EST
was disabled. |
21 |
TPS voltage was above 2.5 volts for 2 seconds when the
engine was running, or when the TPS was above 4.92 volts at any
time. |
22 |
TPS voltage was under 0.24 volts when the engine was
running. |
23 |
Manifold air temperature sensor signal showed an air
temperature below -22° F for 1 second after the engine has been running
for 2 minutes. |
24 |
Vehicle speed was 0 MPH when engine speed was between
900 and 4400 RPM and throttle position angle was less than 2% for 4
seconds. |
25 |
Manifold air temperature sensor signal showed an air
temperature over 302° F for 3 seconds after the engine has been running
for 2 minutes. |
31 |
Cam pulse was missing on the first pass through the
internal ECM self test of the cam sensor, or for any 3-minute
period. |
33 |
MAP sensor signal voltage was too high (low vacuum)
for 0.5 seconds when throttle opening was under 3%. |
34 |
MAP sensor signal voltage was too low (high vacuum)
when engine speed was under 700 RPM, or when TPS was greater than 20% with
an engine speed above 700 RPM. |
36 |
The DIS module did not sense the correct EST signal
from ECM for 10 consecutive attempts. |
42 |
The EST signal was not received by ECM for 0.5 seconds
when EST mode was enabled or when bypass mode was enabled. |
43 |
One or both of the knock sensors were either open or
grounded for 5 seconds. |
44 |
Left oxygen sensor voltage was under 0.2 volts for 50
seconds of closed loop operation. |
45 |
Left oxygen sensor voltage was over 0.75 volts for 30
seconds when the throttle angle was above 4% during closed loop
operation. |
46 |
ECM did not receive the proper signal from vehicle
anti-theft system when ignition was turned on. |
52 |
Engine oil temperature was below -36° F after engine
had been running for 30 minutes. |
53 |
ECM detected a battery voltage either above 17.1 volts
or below 8 volts. |
54 |
Fuel pump voltage was less than 2 volts for 1.5
seconds since the last reference pulse was received. |
55 |
ECM detected a lean oxygen sensor voltage for 2
seconds during the power enrichment modes of operation. |
56 |
Vacuum sensor voltage was either above 5 volts or
below 0.46 volts. |
61 |
Vacuum sensor voltage was between 0.76 and 4.89 volts
when secondary port throttle valves were commanded closed, or the vacuum
sensor voltage was below 1.7 volts when the secondary port throttle valves
were commanded open. |
62 |
Engine oil temperature sensor showed oil temperature
above 284° F after the engine had been running at least 30 minutes. |
63 |
Right oxygen sensor was open showing a steady voltage
between 0.35 and 0.55 volts for 60 seconds after the engine had been
running for at least 2 minutes. |
64 |
Right oxygen sensor voltage was below 0.2 volts for 50
seconds of closed loop operation. |
65 |
Right oxygen sensor voltage was above 0.75 volts for
30 seconds of closed loop operation when the throttle angle was above 20%
or below 2.7%. |
The Diagnostic Codes and Explanations
are derived from Manufacturer supplied Technical Data. WesTech does not
guarantee the accuracy of this Information nor can it be held liable for
providing it. |