cel code p1607
Joined: Mar 2001
Posts: 37,305
Likes: 18
1. Reset the ECM (Pull "BACK UP" fuse for 1/2 a minute)
2. Turn ignition ON
3. Wait 30 seconds
Do you get another P1607?
If YES - substitute with a known good ECU. If this works, you need a new ECU.
If NO - go to step 4.
4. Turn ignition OFF
5. Turn ignition ON
6. Wait 10 seconds
Do you get P1607?
YES - sub a known good ECU. If this works, replace original ECU.
NO - Intermittent failure, system is OK at this time.
2. Turn ignition ON
3. Wait 30 seconds
Do you get another P1607?
If YES - substitute with a known good ECU. If this works, you need a new ECU.
If NO - go to step 4.
4. Turn ignition OFF
5. Turn ignition ON
6. Wait 10 seconds
Do you get P1607?
YES - sub a known good ECU. If this works, replace original ECU.
NO - Intermittent failure, system is OK at this time.
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