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    4. : What does the P1634 error mean in the Opel Zafira?

What does the P1634 error mean in the Opel Zafira?

Years: 1999-2005
In the Opel Zafira, the error P1634 obtained by reading the control unit thanks to the appropriate scanner, indicates the presence of a malfunction in the diesel injection pump. However, being a generic signal, the problem could also concern other elements of the engine fuel system. If in doubt, it is always advisable to go to the workshop for a check.

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