P2135 2004 Toyota Highlander Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation
Quick Answer
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. Common causes include Faulty electric throttle control actuator (TP sensor 1 and 2), Throttle Position Sensor harness is open or shorted, Throttle Position Sensor circuit poor 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
- P2135 2004 Toyota Highlander indicates Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation.
- Common causes
- Common causes include Faulty electric throttle control actuator (TP sensor 1 and 2), Throttle Position Sensor harness is open or shorted, Throttle Position Sensor circuit poor 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 P2135 2004 Toyota Highlander Description
The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
What are the Possible Causes of the DTC P2135 2004 Toyota Highlander?
- Faulty electric throttle control actuator (TP sensor 1 and 2)
- Throttle Position Sensor harness is open or shorted
- Throttle Position Sensor circuit poor connection
- Faulty accelerator pedal position sensor
- ECM
How to Fix the DTC P2135 2004 Toyota Highlander?
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 P2135 2004 Toyota Highlander 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 P2135 2004 Toyota Highlander Code
1. What does the OBDII code P2135 mean on a 2004 Toyota Highlander?
P2135 indicates a voltage correlation issue between the Throttle Position Sensor (TPS) 'A' and 'B,' meaning the engine control module (ECM) detects inconsistent signals from the sensors.
2. What are the symptoms of code P2135 in a 2004 Toyota Highlander?
Symptoms include reduced engine power (limp mode), poor acceleration, stalling, the check engine light illuminating, and irregular throttle response.
3. What causes the P2135 code to appear?
Common causes include a faulty throttle position sensor, a malfunctioning accelerator pedal sensor, wiring or connector issues, or a failing throttle body.
4. Can I drive my 2004 Toyota Highlander with a P2135 code?
Driving is not recommended, as the vehicle may enter limp mode, potentially leading to unsafe driving conditions or further engine damage.
5. How do I diagnose the P2135 code in a 2004 Toyota Highlander?
Start by inspecting the throttle body wiring and connectors for damage, checking the throttle position sensor and accelerator pedal sensor for proper function, and using a scan tool to monitor sensor voltages.
6. How is the P2135 code fixed in a 2004 Toyota Highlander?
Repairs may involve cleaning or replacing the throttle body, replacing the throttle position sensor or accelerator pedal assembly, repairing damaged wiring, or reprogramming the ECM.
7. Can a dirty throttle body cause the P2135 code?
Yes, a dirty or carbon-clogged throttle body can cause erratic sensor signals, leading to the P2135 code.
8. How much does it cost to repair the P2135 code on a 2004 Toyota Highlander?
Repair costs vary but can range from $150 to $500, depending on whether the issue is a simple cleaning, sensor replacement, or throttle body replacement.
9. Do I need to replace the throttle body to fix the P2135 code?
Not always. While throttle body replacement is sometimes necessary, the issue may be resolved by cleaning it, repairing wiring, or replacing a sensor.
10. Can a software update fix the P2135 code in a 2004 Toyota Highlander?
In rare cases, an ECM reflash or software update may resolve the issue if it is related to programming errors. Consult a dealer or qualified technician.
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