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2003 Chevy Tahoe check engine light came on

Tiny
SANDRA ROYER
  • MEMBER
  • 2003 CHEVROLET TAHOE
  • V8
  • 2WD
  • AUTOMATIC
  • 107,000 MILES
When we hooked a scanner up it read " open injector circuit ". What does that mean and how do you fix it? The code was P0200
Tuesday, July 7th, 2009 AT 10:05 PM

3 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
What was the code?
Check fuses, check injectors and injector wiring
good luck
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Tuesday, July 7th, 2009 AT 10:09 PM
Tiny
SANDRA ROYER
  • MEMBER
  • 3 POSTS
The code was P0200
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Wednesday, July 8th, 2009 AT 9:01 AM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
1. Clear the DTC with a scan tool
2. Start and idle the engine at the normal operating temp
3. Monitor the misfire current counters (with a scan tool )
4. Any misfire current counters incrementing?
5. Turn OFF the ignition
6. Disconnect the injector which displays the highest number of misfire current counters
7. Turn ON the ignition, with key off
8. Probe the ignition 1volt circuit with a test light that connected to a good ground
9. Does it light up
10. If not, check connector and wiring
11. If it does, connect injector test lamp between the control circuit of the fuel injector
12. Start the engine
13. Does the test lamp flash
14. Does the light lamp remain illuminated

good luck
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Wednesday, July 8th, 2009 AT 8:37 PM

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