P0459 CADILLAC - Evaporative Emission Purge Solenoid Control Circuit Shorted
P0459 CADILLAC Possible Causes
- Faulty Evaporative Emission (EVAP) Purge Solenoid
- Evaporative Emission (EVAP) Purge Solenoid harness is open or shorted
- Evaporative Emission (EVAP) Purge Solenoid circuit poor electrical connection
First diagnose P0459 CADILLAC code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P0459 CADILLAC code
Labor: 1.0The cost of diagnosing the P0459 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the P0459 CADILLAC code detected?The Powertrain Control Module (PCM) has detected a high voltage on the canister purge solenoid with the driver commanded on
P0459 CADILLAC Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0459 Cadillac DescriptionThe Evaporative Emission (EVAP) canister purge valve is used to purge fuel vapor from the EVAP canister to the intake manifold. The EVAP canister purge valve is Pulse Width Modulated (PWM). Ignition voltage is supplied directly to the EVAP canister purge valve. The Engine Control Module (ECM) controls the solenoid by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.
P0459 CADILLAC More InformationNeed more information on how to fix the P0459 CADILLAC code?
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