What Does P1501 Mean?
The speedometer/odometer module is receiving an intermittent signal from the vehicle speed sensor. This causes erratic or no speedometer operation and may affect transmission shift points and other speed-dependent systems.
Common Causes
35%
Faulty vehicle speed sensor with intermittent signal output
25%
Damaged or corroded wiring between VSS and instrument cluster module
20%
Loose or corroded electrical connections at VSS or module
12%
Faulty speedometer/odometer module or cluster circuit board
8%
Damaged tone ring or reluctor on transmission output shaft
Diagnostic Steps
1
Step 1: Monitor vehicle speed sensor signal voltage or frequency with scan tool while driving
2
Step 2: Inspect VSS connector for corrosion, damage, or loose connections
3
Step 3: Test VSS wiring for continuity, shorts, and proper resistance values
4
Step 4: Check VSS mounting for looseness or excessive air gap between sensor and tone ring
5
Step 5: If external components test good, diagnose instrument cluster module for internal faults
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
The speedometer/odometer module is receiving an intermittent signal from the vehicle speed sensor. This causes erratic or no speedometer operation and may affect transmission shift points and other speed-dependent systems.
The most common cause of P1501 (Programmable Speedometer & Odometer Module/Vehicle Speed Sensor Intermittent circuit-failure) is: Faulty vehicle speed sensor with intermittent signal output
Typical repair costs for P1501 range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Speedometer may be inaccurate or non-functional, making it difficult to judge vehicle speed. Transmission may shift harshly or stay in wrong gear.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1501 to identify the root cause.
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Quick Info
Category
Powertrain
System
Instrumentation and Transmission Control
Difficulty
Type
Manufacturer
Recommended Tools
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