P1135 Code: Meaning, Symptoms, Causes & Fix

Overview

Code P1135 indicates a fault in Pedal Position Sensor A Circuit Intermittent, typically within powertrain controls.

Symptoms

check engine light
rough operation in certain conditions
reduced performance

Common causes

Temperature/vibration related circuit dropout affecting pedal position sensor a circuit intermittent
Intermittent harness contact
Connector pin damage/corrosion or harness stress near related components

How to diagnose P1135

Confirm P1135 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to pedal position sensor a circuit intermittent for obvious defects.
Reproduce the fault with harness movement and heat/vibration checks.
Check for related DTCs to identify the root-cause chain before replacing parts.
After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code P1135

Moderate: This code is moderate severity: the vehicle may still operate, but fault progression can increase repair cost over time.

Can you drive with P1135?

Most vehicles can be driven short-term with P1135, but postpone heavy load/highway driving until repaired.

If the warning lamp is flashing or drivability/safety is affected, avoid driving and diagnose immediately.

How to fix it (step-by-step)

Repair obvious wiring/connector faults first to prevent repeat parts replacement.
Address the root fault mode (intermittent) in the pedal position sensor a circuit intermittent circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify P1135 remains cleared under the conditions that originally set the code.

Fix options

Retest after thermal/vibration simulation.
Wiggle-test harness during live monitoring.
Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$200-$900

Common mistakes when diagnosing P1135

Replacing parts without verifying voltage, ground, and signal integrity first.
Ignoring related stored/pending codes that indicate upstream faults.
Skipping post-repair verification drive cycle and readiness checks.

P1135 in common vehicles

P1135 appears across makes such as Nissan, Hyundai, Kia, Volkswagen. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes P1135?

P1135 is commonly set by intermittent faults affecting pedal position sensor a circuit intermittent.

How much does it cost to fix P1135?

For P1135, repair costs are typically $200-$900 depending on exact root cause, labor rates, and part quality.

Can I clear P1135 without repair?

You can clear P1135 temporarily, but the code usually returns until the underlying fault is corrected.