OBD Guide

P2DA1

Gear Shift Control Module B Supply Voltage Low

P2DA1 is an OBD-II diagnostic trouble code meaning: Gear Shift Control Module B Supply Voltage Low. Common causes: bad contacts in the electrical circuit, broken or damaged wires. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Delays when shifting gears
  • Sharp gear changes
  • Transmission of the gearbox into emergency mode
  • Check Engine Light Is On
  • Reduced engine performance

Causes

  • Bad contacts in the electrical circuit
  • Broken or damaged wires
  • Faulty power supply
  • Fuse or relay problems
  • Shift control module B malfunction

How to Fix

  1. Check the supply voltage on the module
  2. Inspect and check the integrity of wires and connections
  3. Check fuses and relays
  4. Replace faulty electrical circuit components
  5. Replace shift control module B if necessary

Related codes

Error P2DA1 by Vehicle Brand

FAQ

What does the P2DA1 code mean?

P2DA1 is an OBD-II diagnostic trouble code that indicates: Gear Shift Control Module B Supply Voltage Low

What causes a P2DA1 error code?

The most common causes of P2DA1 include: Bad contacts in the electrical circuit; Broken or damaged wires; Faulty power supply; Fuse or relay problems.

How do I fix a P2DA1 diagnostic trouble code?

To fix P2DA1: Check the supply voltage on the module. Inspect and check the integrity of wires and connections. Check fuses and relays. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2DA1?

Yes, but get it checked soon

How much does it cost to fix P2DA1?

The estimated repair cost for P2DA1 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat