OBD Guide
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P1593

Altitude Adoption Signal Outside Tolerance

P1593 is an OBD-II diagnostic trouble code meaning: Altitude Adoption Signal Outside Tolerance. Common causes: malfunction of the atmospheric pressure (map) sensor, problems with wiring to the map sensor. Estimated repair cost: $17–67.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • Unstable engine operation
  • Increased fuel consumption
  • Reduced engine power
  • Check Engine Light Illuminates
  • Problems starting the engine at high altitudes

Causes

  • Malfunction of the atmospheric pressure (MAP) sensor
  • Problems with wiring to the MAP sensor
  • Engine control unit malfunction
  • Mechanical damage to the sensor
  • Moisture entering the sensor

How to Fix

  1. Check the atmospheric pressure sensor readings
  2. Inspect the sensor wiring and connectors
  3. Check the integrity of the vacuum hose (if any)
  4. Replace faulty MAP sensor
  5. Flash or replace ECU if necessary

Related codes

P0106P0107P0108

Error P1593 by Vehicle Brand

BMW

FAQ

What does the P1593 code mean?

P1593 is an OBD-II diagnostic trouble code that indicates: Altitude Adoption Signal Outside Tolerance

What causes a P1593 error code?

The most common causes of P1593 include: Malfunction of the atmospheric pressure (MAP) sensor; Problems with wiring to the MAP sensor; Engine control unit malfunction; Mechanical damage to the sensor.

How do I fix a P1593 diagnostic trouble code?

To fix P1593: Check the atmospheric pressure sensor readings. Inspect the sensor wiring and connectors. Check the integrity of the vacuum hose (if any). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1593?

Yes, but get it checked soon

How much does it cost to fix P1593?

The estimated repair cost for P1593 is $17–67. Actual cost depends on your vehicle, location, and labor rates.

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