KOER
CODES
11*
(all except
high altitude)
62*
(high altitude V-6
or V-8 ONLY)
65*
(high altitude
I-4 ONLY)
Any Code(s)
No Codes
Received
(STO light
always
on or off)
*Note: "High Altitude" refers to vehicles with computer adjusted for operation at high
elevations such as in Denver, Colorado.
ACTION TO TAKE:
System pass. No problem found by computer during KOER Self-
Test. The Self-Test Diagnostic Procedure is complete. If vehicle
symptoms are still present, they are probably not related to the
computer system.
System pass. No problem found by computer during KOER Self-
Test. The Self-Test Diagnostic Procedure is complete. If vehicle
symptoms are still present, they are probably not related to the
computer system.
System pass. No problem found by computer during KOER Self-
Test. The Self-Test Diagnostic Procedure is complete. If vehicle
symptoms are still present, they are probably not related to the
computer system.
Codes indicate system problems are present now. Write down all
codes. Refer to vehicle service manual for code troubleshooting
charts and repair procedures. Repeat PART 3: Key On Engine
Running (KOER) Self-Test after every repair.
You have a problem which must be repaired before proceeding.
Refer to the vehicle service manual "Self-Test Not Functional" (or
similar title) troubleshooting chart.
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