P0657 Scion Code - Actuator Supply Voltage Circuit open
Quick Answer
The Engine Control Module (ECM) monitors the output voltage to the throttle actuator. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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
- P0657 Scion indicates Actuator Supply Voltage Circuit open.
- Common causes
- Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module 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 P0657 Scion Description
What are the Possible Causes of the DTC P0657 Scion?
- Faulty Engine Control Module (ECM)
- Engine Control Module harness is open or shorted
- Engine Control Module circuit poor electrical connection
How to Fix the DTC P0657 Scion?
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 P0657 Scion 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 P0657 Scion Code
1. What does the OBDII code P0657 mean for a Scion?
P0657 indicates an issue with the actuator supply voltage circuit, which is open or experiencing a fault.
2. What are the common symptoms of code P0657 in a Scion?
Symptoms may include poor engine performance, erratic transmission behavior, illuminated check engine light, or failure of certain actuators.
3. What causes the P0657 code in a Scion?
Common causes include damaged wiring, a faulty actuator, a defective powertrain control module (PCM), or blown fuses.
4. Can I drive my Scion with the P0657 code?
It’s not recommended, as this code can affect engine or transmission operation, potentially leading to unsafe driving conditions.
5. How is the P0657 code diagnosed in a Scion?
A mechanic will inspect the wiring and connectors, test the actuator supply voltage circuit, and check the PCM for faults.
6. What repairs are needed to fix the P0657 code in a Scion?
Repairs may involve replacing damaged wiring, repairing connectors, replacing a faulty actuator, or, in rare cases, replacing the PCM.
7. How much does it cost to fix the P0657 code in a Scion?
Costs vary depending on the issue, but wiring repairs or actuator replacements typically range from $100 to $500. PCM replacement can be more expensive.
8. Can a blown fuse cause the P0657 code in a Scion?
Yes, a blown fuse in the actuator supply voltage circuit can trigger this code.
9. How can I prevent the P0657 code in my Scion?
Regular maintenance, including inspecting wiring and connectors for damage, can help prevent this code.
10. Is the P0657 code specific to Scion vehicles?
No, the P0657 code can appear in various vehicles, as it is a generic OBDII code, but its symptoms and repair process may vary by make and model.
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