P1135 Code: Pedal Position Sensor A Circuit Intermittent
🟠 Moderate severity · drivable
Drivable, but throttle response may cut out or surge without warning; use caution until it's fixed.
What P1135 means
The accelerator pedal position sensor A tells the computer how far the pedal is pressed. This code means the sensor's signal drops in and out, so the computer sometimes loses track of the pedal position. That can cause sudden changes in throttle response or a reduced-power mode.
Symptoms
- Check engine light is on
- Throttle response cuts out or surges
- Reduced power or limp mode
- Engine idles oddly
- Code comes and goes
Common causes
- most common: Damaged or chafed wiring to the pedal sensor
- common: Faulty accelerator pedal position sensor
- common: Loose or corroded connector
- rare: Faulty powertrain control module
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect and repair the sensor wiring and connector | Yes | $50–150 |
| Replace the accelerator pedal assembly | Mechanic | $100–300 |
| Clean the pedal connector terminals | Yes | $0–20 |
Frequently asked questions
Can I drive with a P1135 code?
Yes, but throttle response can cut out or surge without warning. If it feels unsafe, have it towed instead.
Why is the pedal sensor signal intermittent?
Intermittent usually means a chafed wire or loose connector that loses contact as the car moves and vibrates.
How much does it cost to fix P1135?
Wiring repairs run about $50–$150. A new pedal assembly is $100–$300 installed.
Related codes
P1258
P1258 Code: Pedal Correlation PDS1 and PDS2
P0121P0121 Code: Throttle Position Sensor/Switch Circuit Range/Performance
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.