The OBD code P0505 for Toyota indicates a malfunction in the Idle Air Control System.
Symptoms include the Engine Light ON, hard starting, and rough idle.
Causes may include a dirty throttle body, faulty ETCS, or issues with the wiring harness.
This issue can affect drivability but is not a severe problem.
A possible fix involves inspecting and cleaning the throttle body and checking the wiring connections for any faults.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Toyota p0505 OBD Code
The vehicle may experience high idle speed or fluctuating idle with fault code P0505.
- Symptoms for Toyota OBD code P0505 include: Engine Light ON.
- Engine hard to start.
- Rough or erratic idle speed.
Causes of the Toyota p0505 OBD Code
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Potential triggers for Toyota fault code P0505 include a faulty idle air control valve or a vacuum leak.
- P0505 can be caused by a dirty Throttle Body.
- A faulty Electronic Throttle Control System (ETCS) (Throttle Body).
- An open or shorted Electronic Throttle Control System harness.
- A poor electrical connection in the Electronic Throttle Control System circuit.
- An Air Induction System (Intake leak).
- A PCV hose connection issue.
- Or a faulty Engine Control Module (ECM).
Fixing Toyota Error Code p0505 Step By Step
To resolve Toyota fault code P0505, inspect and clean the idle air control valve and passages.
- To fix Toyota OBDII code P0505, first, review the possible causes related to the Idle Air Control (IAC) system.
- Visually inspect the wiring harness and connectors for any damage.
- Check the connector pins for signs of being broken, bent, pushed out, or corroded.
- Clean the IAC valve and throttle body to ensure proper operation.
- Test the IAC valve for proper function using a scan tool or multimeter.
- Replace the IAC valve if it fails the test.
- Reset the Engine Control Module (ECM) to clear the fault code and monitor the system for any recurring issues.
Cost Of Fixing Toyota p0505 Fault Code
The repair for Toyota fault code P0505 typically involves replacing the idle air control valve.
The cost to diagnose and fix a Toyota OBD code P0505 typically ranges from $75 to $150 per hour for labor rates.
With an estimated repair time of 1. 0 hour, the total cost can be around $75 to $150, depending on shop rates and the complexity of the issue.
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Details of the Toyota p0505 OBD Code
The Toyota P0505 code indicates a malfunction in the idle control system.
Code P0505 for Toyota vehicles means that the Idle Air Control System Malfunction has been detected.
This code is triggered by the Engine Control Module (ECM) when it detects that the idle speed control system is not operating within the predetermined range.
The idle air control system regulates the engine idle speed by controlling the amount of air entering the engine bypassing the throttle plate.
When this system malfunctions, it can lead to high or low idle speed, stalling, or rough idle.
Mechanic’s Tech Notes
For Toyota code P0505, check the idle air control system for potential issues.
To diagnose and fix OBDII code P0505 on a Toyota, start by checking the Idle Air Control (IAC) valve for any carbon buildup or sticking.
Clean or replace the IAC valve as needed.
Next, inspect the wiring harness and connectors for any damage or corrosion.
Use a voltmeter to test the IAC valve’s resistance and ensure it falls within specifications.
Additionally, check for any vacuum leaks that could affect idle speed.
Reset the code after completing repairs and monitor for recurrence.
If the issue persists, consider replacing the IAC valve.
FAQ
Common symptoms of OBD code P0505 in a Toyota: Engine Light ON, hard starting, rough idle. Causes: Dirty throttle body, faulty ETCS. Fix: Inspect wiring, connectors for damage.
Typical cause of P0505 in Toyota: Dirty throttle body, faulty ETCS, open/shorted ETCS harness, poor electrical connection, intake leak, PCV hose, faulty ECM.
Diagnose and repair P0505 in a Toyota: Check throttle body for dirt, inspect ETCS system, look for wiring issues, intake leaks, PCV hose, and ECM faults.
Wrap Up
If your Toyota is displaying OBDII code P0505 along with high idle speed, it could be caused by a faulty idle air control valve, vacuum leaks, or a dirty throttle body.
These issues can disrupt the engine’s idle control system, leading to the P0505 trouble code.
To address Toyota OBDII code P0505, start by inspecting the idle air control valve and its wiring for any signs of damage or corrosion.
Check for vacuum leaks in the intake system and clean the throttle body to ensure proper airflow.
If necessary, replace the idle air control valve to resolve the
