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P0651 on CHEVROLET IMPALA

Sensor Reference Voltage B Circuit/Open

NHTSA Reports
2
Severity
Medium
Most Affected
2008, 2010
Crashes / Fires
0 / 0
Source: NHTSA Complaints Database · SAE J2012

What P0651 Means on Your CHEVROLET IMPALA

P0651 is a diagnostic trouble code indicating: Sensor Reference Voltage B Circuit/Open. This code relates to the computer and output circuits system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 CHEVROLET IMPALA owners have reported this issue to NHTSA across model years 2008-2010. Most reports come from the 2008, 2010 model years. The most commonly reported component is Electrical System,Vehicle Speed Control (50.0% of reports).

Real CHEVROLET IMPALA Owner Reports

Source: NHTSA Complaints Database

"When driving through st. louis around midnight on i-270 on may 3, the "engine power is reduced" message came on and the car slowed dramatically right in the middle lane of the interstate. quite scary indeed, not to mention the lurching."

— 2008 CHEVROLET IMPALA owner · ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL · Filed 05/03/2014

"Driving home one night after just having my vehicle repaired a few weeks earlier, without warning, my vehicle began to stall. just before the stall it was driving completely normal with no issues at all."

— 2010 CHEVROLET IMPALA owner · VEHICLE SPEED CONTROL,UNKNOWN OR OTHER,ELECTRONIC STABILITY CONTROL (ESC) · Filed 04/19/2017

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1
'08
1
'10

Common Causes on CHEVROLET IMPALA

Based on NHTSA complaint component analysis for this vehicle.

ELECTRICAL SYSTEM,VEHICLE SPEED CONTROL 50%
VEHICLE SPEED CONTROL,UNKNOWN or OTHER,ELECTRONIC STABILITY CONTROL (ESC) 50%

What To Do Next

  1. 1
    Check for recalls on YOUR VIN

    Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.

  2. 2
    Get a proper diagnosis

    A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.

  3. 3
    Compare repair quotes

    Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0651 mean on a CHEVROLET IMPALA? ▾
P0651 indicates: Sensor Reference Voltage B Circuit/Open. This is a computer and output circuits code. 2 CHEVROLET IMPALA owners have reported this to NHTSA.
What are the most common causes of P0651 on CHEVROLET IMPALA? ▾
Based on 2 NHTSA reports, the most commonly cited components are: Electrical System,Vehicle Speed Control, Vehicle Speed Control,Unknown Or Other,Electronic Stability Control (Esc). These percentages are based on the component field in owner complaints.
Is P0651 serious on my CHEVROLET IMPALA? ▾
Of 2 NHTSA reports for this code on CHEVROLET IMPALA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.
What should I do if my CHEVROLET IMPALA shows P0651? ▾
1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.

P0651 on Other Vehicles

→ All codes reported on CHEVROLET IMPALA