OBD Guide

P1535

A/C High Side Temperature Sensor Circuit

P1535 is an OBD-II diagnostic trouble code meaning: A/C High Side Temperature Sensor Circuit. Common causes: high pressure temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Air conditioner won't turn on
  • Reduced cooling efficiency
  • The air conditioner indicator is flashing
  • Increased noise from the compressor
  • Air conditioning system overheating

Causes

  • High pressure temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Low refrigerant level in the system
  • Air conditioning control unit malfunction

How to Fix

  1. Check the refrigerant level in the system
  2. Inspect the sensor connector and wiring
  3. Check the sensor resistance (compare with the norm)
  4. Replace temperature sensor if necessary
  5. Check the operation of the system after repair

Related codes

Error P1535 by Vehicle Brand

FAQ

What does the P1535 code mean?

P1535 is an OBD-II diagnostic trouble code that indicates: A/C High Side Temperature Sensor Circuit

What causes a P1535 error code?

The most common causes of P1535 include: High pressure temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Low refrigerant level in the system.

How do I fix a P1535 diagnostic trouble code?

To fix P1535: Check the refrigerant level in the system. Inspect the sensor connector and wiring. Check the sensor resistance (compare with the norm). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1535?

Yes, but get it checked soon

How much does it cost to fix P1535?

The estimated repair cost for P1535 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat