OBD Guide
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B1466

Wiper Hi/Low Speed Not Switching

B1466 is an OBD-II diagnostic trouble code meaning: Wiper Hi/Low Speed Not Switching. Common causes: faulty steering column switch, problems with the wiring harness (open circuit, short circuit). Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–167 (est.)

Symptoms

  • Cannot change wiper speeds
  • The wipers only work at speed 1
  • Spontaneous speed change
  • Error indication on the instrument panel

Causes

  • Faulty steering column switch
  • Problems with the wiring harness (open circuit, short circuit)
  • Oxidation of contacts in connectors
  • Speed control relay failure
  • Malfunction of the wiper gear motor
  • BCM software failure (rare)

How to Fix

  1. Check the integrity of the wiring harness from the switch to the gearmotor
  2. Clean contacts in connectors
  3. Test the steering column switch with a multimeter
  4. Check control relay (if equipped)
  5. Diagnose the wiper motor on a stand
  6. Read BCM error log

Related codes

B1465B1467U0121

FAQ

What does the B1466 code mean?

B1466 is an OBD-II diagnostic trouble code that indicates: Wiper Hi/Low Speed Not Switching

What causes a B1466 error code?

The most common causes of B1466 include: Faulty steering column switch; Problems with the wiring harness (open circuit, short circuit); Oxidation of contacts in connectors; Speed control relay failure.

How do I fix a B1466 diagnostic trouble code?

To fix B1466: Check the integrity of the wiring harness from the switch to the gearmotor. Clean contacts in connectors. Test the steering column switch with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1466?

Do not drive — repair immediately

How much does it cost to fix B1466?

The estimated repair cost for B1466 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat