The EPC notes: "Superseded by C2Z 21766." This means Jaguar improved the tank design. Without the EPC, you would have bought the old, faulty tank.
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“It’s the wiring harness,” she said without looking up. “There’s a break somewhere between the ECM and the throttle body. Intermittent contact. Heat makes it expand. Cold makes it contract. That’s why it comes and goes.” epc jaguar