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TuningBot DTC Database · v4.37.14

P1494 Diagnostic Trouble Code (4 interpretations)

4 manufacturer-specific interpretations across 4 manufacturers in the TuningBot DTC database.

P · PowertrainEmissionsOBD2

Chrysler

1 interpretation
P1494
Evaporative emission (EVAP) leak detection pump - pressure switch Chrysler · emissions Data confidence 62%

The control module detected a condition consistent with a leak affecting the Evaporative emission (EVAP). This is the manufacturer-specific definition used by Chrysler.

Possible causes

  • Wiring
  • hose leak/blockage
  • EVAP leak detection pump

Mitsubishi

1 interpretation
P1494
EVAP Ventilation Switch Or Mechanical Fault Mitsubishi · emissions Data confidence 80%

The control module registered the fault condition described as "EVAP Ventilation Switch Or Mechanical Fault". This is the manufacturer-specific definition used by Mitsubishi.

Subaru

1 interpretation
P1494
Exhaust gas recirculation (EGR) solenoid valve - signal 2 - voltage low Subaru · emissions Data confidence 62%

The control module detected that the Exhaust gas recirculation (EGR) solenoid valve - signal 2 voltage stayed below the expected range. This is the manufacturer-specific definition used by Subaru.

Possible causes

  • Wiring
  • EGR solenoid valve

VAG

1 interpretation
P1494
EVAP canister purge valve 2 - incorrect flow detected VAG · emissions Data confidence 62%

The control module detected that the EVAP canister purge valve 2 state or value did not match what was expected. This is the manufacturer-specific definition used by Audi.

Possible causes

  • Wiring
  • hoses blocked/disconnected/ split
  • EVAP canister purge valve
  • ECM
Applies to Audi

Related and nearby codes

How to read P1494

P

Powertrain: engine, transmission and driveline systems.

1

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

494

Specific fault index within the subsystem.

Frequently asked questions about P1494

What does P1494 mean?

Diagnostic Trouble Code (4 interpretations). The control module detected a condition consistent with a leak affecting the Evaporative emission (EVAP). This is the manufacturer-specific definition used by Chrysler.

Is P1494 generic or manufacturer-specific?

P1494 is a manufacturer-specific code. In this database it is documented for: Chrysler, Mitsubishi, Subaru, VAG. The same number can mean something different on other brands.

Can TuningBot remove P1494 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

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