P2123 2008 Honda Accord Code - Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit High Voltage
Quick Answer
P2123 2008 Honda Accord indicates Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit High Voltage. Common causes include Faulty Accelerator Pedal Position, Accelerator Pedal Position harness is open or shorted, Accelerator Pedal Position 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
- P2123 2008 Honda Accord indicates Accelerator Pedal Position (APP) Sensor 1 (Throttle Position Sensor D) Circuit High Voltage.
- Common causes
- Common causes include Faulty Accelerator Pedal Position, Accelerator Pedal Position harness is open or shorted, Accelerator Pedal Position 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 P2123 2008 Honda Accord Description
What are the Possible Causes of the DTC P2123 2008 Honda Accord?
- Faulty Accelerator Pedal Position
- Accelerator Pedal Position harness is open or shorted
- Accelerator Pedal Position circuit poor electrical connection
- ECM
How to Fix the DTC P2123 2008 Honda Accord?
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 P2123 2008 Honda Accord 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.
Need more information about the P2123 2008 Honda Accord code?
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Frequently Asked Questions about P2123 2008 Honda Accord Code
What does OBDII code P2123 mean on a 2008 Honda Accord?
P2123 indicates that the Accelerator Pedal Position (APP) Sensor 1, also known as Throttle Position Sensor D, is detecting a high voltage signal that is outside the expected range.
What are the common symptoms of code P2123?
Symptoms may include reduced engine performance, hesitation during acceleration, the vehicle going into limp mode, or the Check Engine Light being illuminated.
What causes code P2123 on a 2008 Honda Accord?
Common causes include a faulty APP sensor, damaged or corroded wiring, a poor electrical connection, or issues with the engine control module (ECM).
Can I drive my Honda Accord with a P2123 code?
While the car may still be drivable, it could enter limp mode and have limited acceleration. Driving with this code for extended periods is not recommended, as it could lead to unsafe driving conditions.
How do I diagnose code P2123 on a 2008 Honda Accord?
Start by inspecting the APP sensor and its wiring for damage or corrosion. Use a multimeter to check the voltage readings, and scan the ECM for additional codes that may provide more context.
How is code P2123 fixed?
Repairs may involve replacing the APP sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the ECM if it's faulty.
What tools are needed to troubleshoot P2123?
You’ll need an OBDII scanner, a multimeter to test voltage, and possibly wire repair tools for fixing damaged connections.
Is the APP sensor the same as the throttle position sensor?
No, the APP sensor monitors the accelerator pedal's position, while the throttle position sensor monitors the throttle plate's position. Both are related but have different functions.
How much does it cost to repair a P2123 code?
Repair costs vary depending on the issue. Replacing the APP sensor typically costs $100–$300, including parts and labor, while wiring repairs or ECM replacements may cost more.
Can a dirty throttle body cause a P2123 code?
A dirty throttle body is unlikely to cause this specific code, but it’s good practice to clean the throttle body during diagnostics to ensure optimal performance.
Discuss the causes and fixes for P2123 2008 Honda Accord OBDII Code
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