P0827 - Up and Down Shift Switch Circuit Low

The PCM detected a fault in this control circuit or sensor input, usually caused by a failed component, wiring problem, or an out-of-range system condition.

Code first. Confirm symptoms and checks before pricing parts.

Code Overview

The PCM detected a fault in this control circuit or sensor input, usually caused by a failed component, wiring problem, or an out-of-range system condition.

Common Causes

• Failed sensor or actuator
• Wiring or connector issue
• Poor power or ground
• Control-module fault

Diagnostic Steps

1. Inspect the connector and harness closely
2. Verify power, ground, and reference voltage
3. Compare scan data to expected operation
4. Check for companion codes that point to the root cause

Likely Repairs & Cost Guides

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Related OBD Codes

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Next Steps

Move from code to checks, then estimate.