|
Malfunction
indicator Lamp (MIL)
(1994-1997)
Diagnostic Trouble Code
Descriptions
|
Using the malfunction indicator lamp (MIL)
(1) Cycle the ignition key On - Off - On - Off - On
within 5 seconds.
(2) Count the number of times the MIL (check engine
lamp) on the instrument panel flashes on and off.
The number of flashes represents the trouble code.
There is a light pause between the flashes representing
the first and second digits of the code. Longer pauses
separate individual two digit trouble codes.
Diagnostic
trouble code descriptions
|
|
MIL
Code
|
Generic
Scan Tool
Code
|
HEX
Code
|
DRB Scan Tool Display
|
Description
of Diagnostic Trouble Code
|
|
11
|
P1391**
or
or
P1398** |
9D
28
BA |
Intermittent
Loss of CMP or CKP
No Crank Reference Signal at PCM
Misfire Adaptive Numerator at Limit |
Intermittent
loss of either camshaft or crankshaft position sensor
No crank reference signal detected during engine cranking.
CKP sensor target windows have too much variation |
|
12*
|
|
|
Battery
Disconnect |
Direct
battery input to PCM was disconnected within the last
50 Key-on cycles. |
|
13**
|
P1297 |
27 |
No
Change in MAP From Start to Run |
No
difference recognized between the engine MAP reading and
the barometric (atmospheric) pressure reading from start-up. |
|
14**
|
P0107
or
P0108
or
P1296 |
24
25
87
|
MAP
Sensor Voltage Too Low
MAP Sensor Voltage Too High
No 5 Volts To MAP Sensor |
MAP
sensor input below minimum acceptable voltage.
MAP sensor input above minimum acceptable voltage.
5 Volt output to MAP wsnsor open. |
|
15**
|
P0500
or
P0720 |
23
A6 |
No
Vehicle Speed Sensor Signal
Low Output Spd Sensr RPM. Above 15 MPH |
No
vehicle speed sensor signal detected during road load
conditions.
Output Shaft Speed Sensor Circuit |
|
17**
17*
|
P0125
or |
80
21 |
Closed
Loop Temp Not Reached
Engine Is Cold Too Long |
Engine
does not reach 20'F within acceptable limits.
Engine did not reach operating temperature within acceptable
limits. |
|
21**
|
P0131
or
P0133
or
P0135
or |
9B
66
67 |
Upstream
O2s Voltage Shorted to Ground
Upstream O2 Sensor Slow Response
Upstream O2 Sensor Heater Failure |
Tested
at cold start only after start to run.
Upstream oxygen sensor response slower than minimum required
switching frequency or value does not go bolow. 29 and
then above.78 volts.
Upstream oxygen sensor heating element circuit malfunction.
Tested at cold start only after start to run transfer. |
