P2884 moderate

Transmission Output Speed Sensor B Circuit High

The P2884 code means the vehicle's onboard diagnostic system has detected: Transmission Output Speed Sensor B Circuit High. This is a moderate severity code.

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Keep driving?
No — stop driving
DIY difficulty
hard
Estimated cost
$300 - $1,200 (parts and labor)
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Common Symptoms

  • Transmission Output Speed Sensor B signal too high
  • Harsh or firm shifting
  • Check Engine Light on
  • Transmission warning light on

Probable Causes (Ranked by Likelihood)

  • Open circuit in output speed sensor B wiring Very High
  • Disconnected output speed sensor B connector High
  • Terminal corrosion Moderate
  • TCM reference voltage issue Low

Frequently Asked Questions

What does a high circuit mean?

A high circuit indicates the signal voltage exceeds the maximum expected value, usually from an open wire or disconnected component.

Is this safe to ignore?

No. High circuit readings can cause the TCM to make incorrect decisions, potentially leading to harsh shifts or transmission damage.

How long does this repair take?

Wiring and connector repairs typically take 1-3 hours. Internal component replacement may require 4-8 hours including transmission removal.

Mechanics Guide Step-by-step diagnosis

Step-by-Step Diagnostic Procedure

  1. Read all transmission DTCs

  2. Check output speed sensor B connector integrity

  3. Test for open circuits in wiring harness

  4. Verify TCM reference voltage output

Sources 1

This page is built from documented references. Verify against your own service info before repair work.

  • SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)

Commonly Affected Vehicles

  • 2010-2020 Ford F-150
  • 2012-2019 Ram 1500
  • 2011-2020 Chevrolet Silverado
  • 2013-2020 Toyota Tacoma

Related Codes

P2883P2885

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