P0490 Dodge Code - Exhaust Gas Recirculation Throttle Control Circuit 'A' Circuit High
Quick Answer
The Engine Control Module (ECM) does not detect voltage on the Exhaust Gas Recirculation (EGR) Solenoid circuit. Common causes include Faulty Exhaust Gas Recirculation (EGR) Solenoid, Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted, Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0490 Dodge indicates Exhaust Gas Recirculation Throttle Control Circuit 'A' Circuit High.
- Common causes
- Common causes include Faulty Exhaust Gas Recirculation (EGR) Solenoid, Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted, Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0490 Dodge Description
What are the Possible Causes of the DTC P0490 Dodge?
- Faulty Exhaust Gas Recirculation (EGR) Solenoid
- Exhaust Gas Recirculation (EGR) Solenoid harness is open or shorted
- Exhaust Gas Recirculation (EGR) Solenoid circuit poor electrical connection
How to Fix the DTC P0490 Dodge?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0490 Dodge code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0490 Dodge Code
What does the OBDII code P0490 mean on a Dodge vehicle?
P0490 indicates a high voltage issue in the Exhaust Gas Recirculation (EGR) Throttle Control Circuit 'A.' This typically means the EGR system isn't functioning as intended.
What are the common symptoms of code P0490 on a Dodge?
Symptoms include reduced engine performance, rough idling, poor fuel efficiency, increased emissions, and an illuminated Check Engine Light.
What causes code P0490 to appear on a Dodge vehicle?
Common causes include a faulty EGR valve, wiring issues in the EGR circuit, a malfunctioning EGR throttle control sensor, or carbon buildup in the EGR system.
Can a faulty EGR valve trigger code P0490?
Yes, a faulty EGR valve can cause the circuit to send incorrect signals, leading to code P0490.
How can I diagnose code P0490 on my Dodge?
Start by inspecting the wiring and connectors for damage or corrosion, then test the EGR valve and throttle control sensor for proper operation.
Is code P0490 safe to drive with?
Driving with P0490 is not recommended as it can lead to poor fuel efficiency, increased emissions, and potential engine damage over time.
How do I fix code P0490 on a Dodge vehicle?
Repairs may involve cleaning or replacing the EGR valve, repairing damaged wiring, or replacing the throttle control sensor.
Can cleaning the EGR valve resolve code P0490?
Yes, if carbon buildup is the issue, cleaning the EGR valve may fix the problem and clear the code.
Does a failing throttle control sensor cause code P0490?
Yes, a malfunctioning throttle control sensor can prevent proper EGR system operation, triggering the code.
How much does it typically cost to repair code P0490 on a Dodge?
Repair costs vary, but replacing an EGR valve can cost $150-$400, while wiring repairs or sensor replacements may add to the expense.
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