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2006 Chevrolet Express 6.6L, have three codes, (P0045, P0088, P0090) what does this mean?

Vehicle: 2006 Chevrolet Express 6.6L

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P0045 CHEVROLET - Turbocharger Vane Position Control Solenoid Control Circuit

Read more: https://www.autocodes.com/p0045_chevrolet.html

P0088 CHEVROLET - Fuel Rail/System Pressure Too High

Read more: https://www.autocodes.com/p0088_chevrolet.html

P0090 CHEVROLET - Fuel Pressure Regulator Control Circuit

Read more: https://www.autocodes.com/p0090_chevrolet.html

The first code is related to the turbocharge and the other two codes with the fuel pressure. For the the P0088 and P0090 check the fuel pressure regulator, either the connector is bad or the regulator it self.

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