P1227 Infiniti Code - Accelerator Pedal Position Sensor 2 Circuit Low Input
Quick Answer
The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. Common causes include Faulty Accelerator Pedal Position (APP) sensor, Accelerator Pedal Position (APP) sensor harness is open or shorted, Accelerator Pedal Position (APP) sensor 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
- P1227 Infiniti indicates Accelerator Pedal Position Sensor 2 Circuit Low Input.
- Common causes
- Common causes include Faulty Accelerator Pedal Position (APP) sensor, Accelerator Pedal Position (APP) sensor harness is open or shorted, Accelerator Pedal Position (APP) sensor 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 P1227 Infiniti Description
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation such as fuel cut.
What are the Possible Causes of the DTC P1227 Infiniti?
- Faulty Accelerator Pedal Position (APP) sensor
- Accelerator Pedal Position (APP) sensor harness is open or shorted
- Accelerator Pedal Position (APP) sensor circuit poor electrical connection
How to Fix the DTC P1227 Infiniti?
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 P1227 Infiniti 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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Information for Specific Infiniti Models
- P1227 2003 Infiniti G35 — Accelerator Pedal Position Sensor 2 Circuit Low Input
Frequently Asked Questions about P1227 Infiniti Code
1. What does the OBDII code P1227 mean on an Infiniti?
P1227 indicates a problem with the Accelerator Pedal Position Sensor 2, specifically a low input voltage detected by the Engine Control Module (ECM).
2. What are the common symptoms of code P1227 in an Infiniti?
Common symptoms include reduced engine power, poor throttle response, difficulty accelerating, and illumination of the Check Engine Light.
3. What causes the P1227 code to appear on an Infiniti?
Potential causes include a faulty accelerator pedal position sensor, damaged wiring or connectors, corrosion in the circuit, or a malfunctioning ECM.
4. Can I drive my Infiniti with the P1227 code?
Driving with this code is not recommended, as the vehicle may lose power unexpectedly or go into "limp mode," affecting safety and performance.
5. How is the P1227 code diagnosed?
A mechanic will check for stored trouble codes, inspect the accelerator pedal position sensor and its wiring, and measure voltage and continuity in the circuit.
6. How do you fix the P1227 code on an Infiniti?
Repairs may involve replacing the accelerator pedal position sensor, repairing or replacing damaged wiring or connectors, and clearing the code with a scan tool.
7. Is the accelerator pedal position sensor the same as the throttle position sensor?
No, the accelerator pedal position sensor monitors pedal movement, while the throttle position sensor monitors the throttle body’s position.
8. What tools are needed to repair the P1227 code?
Diagnosis and repair typically require an OBDII scanner, a multimeter, and basic hand tools to inspect and replace components.
9. How much does it cost to fix the P1227 code on an Infiniti?
Costs vary, but replacing the accelerator pedal position sensor typically ranges from $150 to $400, including parts and labor.
10. Can a dirty throttle body cause the P1227 code?
While a dirty throttle body is unlikely to directly cause P1227, it can contribute to related performance issues and should be inspected during diagnosis.
Discuss the causes and fixes for P1227 Infiniti OBDII Code
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