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TuningBot DTC Database · v4.37.14

P1490 Mercedes-Benz - Evaporative emission (EVAP) canister purge valve(s) - defective

Manufacturer-specific interpretation for Mercedes-Benz. All interpretations of P1490

P · PowertrainEmissionsOBD2

What P1490 means

P1490
Evaporative emission (EVAP) canister purge valve(s) - defective Mercedes-Benz · emissions Data confidence 62%

The control module's internal test reported the Evaporative emission (EVAP) canister purge valve(s) as faulty. This is the manufacturer-specific definition used by Mercedes-Benz.

Possible causes

  • Wiring
  • hoses
  • EVAP canister purge valve(s)

Related and nearby codes

How to read P1490

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

490

Specific fault index within the subsystem.

Frequently asked questions about P1490

What does P1490 mean?

Evaporative emission (EVAP) canister purge valve(s) - defective. The control module's internal test reported the Evaporative emission (EVAP) canister purge valve(s) as faulty. This is the manufacturer-specific definition used by Mercedes-Benz.

Is P1490 generic or manufacturer-specific?

P1490 is a manufacturer-specific code. In this database it is documented for: Mercedes-Benz. The same number can mean something different on other brands.

Can TuningBot remove P1490 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningStage 1 dyno results for Mercedes engines See the results →

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