OBD Guide
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P1DAD

Input Shaft-Output Shaft Direction Correlation

P1DAD is an OBD-II diagnostic trouble code meaning: Input Shaft-Output Shaft Direction Correlation. Common causes: malfunction of shaft speed sensors, mechanical damage to the transmission. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Incorrect gear shifting
  • Dips during acceleration
  • Vibrations when driving
  • Check engine light comes on
  • Switching to emergency mode of the gearbox

Causes

  • Malfunction of shaft speed sensors
  • Mechanical damage to the transmission
  • Problems with the sensor wiring harness
  • Transmission control unit malfunction
  • Worn or damaged transmission gears

How to Fix

  1. Check shaft speed sensors
  2. Inspect the wiring harness to the sensors
  3. Carry out diagnostics of the transmission control unit
  4. Check the mechanical condition of the gearbox
  5. Replace damaged components

Related codes

P1DABP1DACP1DAE

FAQ

What does the P1DAD code mean?

P1DAD is an OBD-II diagnostic trouble code that indicates: Input Shaft-Output Shaft Direction Correlation

What causes a P1DAD error code?

The most common causes of P1DAD include: Malfunction of shaft speed sensors; Mechanical damage to the transmission; Problems with the sensor wiring harness; Transmission control unit malfunction.

How do I fix a P1DAD diagnostic trouble code?

To fix P1DAD: Check shaft speed sensors. Inspect the wiring harness to the sensors. Carry out diagnostics of the transmission control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1DAD?

Do not drive — repair immediately

How much does it cost to fix P1DAD?

The estimated repair cost for P1DAD is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat