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Diesel Engine with Injector Driver Codes P0201-P0208 - keywords 6.6L DTC FICM LB7 MIL miss misfire power P0202 P0203 P0204 P0205 P0206 P0207 P2146 P2149 SES

Subject:Diesel Engine With Injector Driver Codes P0201-P0208

Models:2001-2004 Chevrolet Kodiak, Silverado
2001-2004 GMC Sierra, TopKick
Equipped with the 6.6 LB7 Diesel Engine



This PI has been revised to add the 2004 model year. Please discard PI01433A.


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Intermittent injector driver codes P0201 through P0208.

Recommendation/Instructions:

Complete the current SI diagnostics for DTC P0201-P0208. If the cause of the concern is not found through normal diagnostics, check for loose or corroded wire connections at the injector. The engine valve cover must be removed to perform this check.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.