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Cadillac
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2003
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CTS Automatic
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Repair and Diagnosis
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0628: Fuel Pump Relay Control Circuit Low
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Conditions For Setting DTC
Conditions For Setting DTC
The control module detects an incorrect voltage on the control circuit of the fuel pump relay.
The condition exists for less than 1 second.