P0829 Code: Up-shift/Down-shift Switch Input Circuit High
Note: We do not currently have verified model-specific diagnostic data for the Lamborghini Urus. The symptoms and fixes listed below are the standard generic OBD2 guidelines for the P0829 code. Always consult a factory service manual before replacing parts.
What does this mean?
Code P0829 indicates that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an abnormally high voltage signal in the up-shift/down-shift switch input circuit. This switch is typically found in vehicles equipped with manual transmissions, automated manual transmissions (AMT), or those with paddle shifters, allowing the driver to manually select gears. A "high" input usually suggests a short to voltage, an open circuit, or a faulty switch sending an incorrect signal, which can lead to erratic shifting, inability to shift gears, or the transmission remaining in a single gear.
How serious is this code?
Driving with code P0829 can be hazardous. The transmission may exhibit erratic shifting, unexpected gear changes, or an inability to shift gears, potentially leading to a sudden loss of power or control. This can increase the risk of an accident, especially in traffic or at higher speeds. It is recommended to have the vehicle diagnosed and repaired promptly.
Diagnostic system: General powertrain circuit
On a Lamborghini Urus, the P0829 code should be diagnosed as part of the general powertrain circuit group. Related codes and live data from this same system can change the repair priority, so avoid replacing parts from the code name alone.
Most Common Causes for Lamborghini Urus
- Low, dirty, or burnt transmission fluid
- Faulty transmission shift solenoid
- Worn or faulty transmission valve body
- Damaged, chafed, or broken wiring harness
Symptoms to Watch For
- Check Engine Light is illuminated
- Hard or harsh gear shifting
- Transmission slipping between gears
- Transmission stuck in one gear
Before replacing parts, check these first
- Record freeze-frame data and related codes before clearing the fault.
- Inspect wiring, connectors, vacuum lines, fluid leaks, and fuses tied to the named system.
- Use live data or a multimeter to confirm the failed circuit before replacing parts.
- Check for blown fuses, weak battery voltage, and damaged connectors before buying major parts.
How to Diagnose
Common Mistakes
Treating the code description as a parts list instead of verifying the circuit, operating conditions, and related codes. Always confirm the fault with freeze-frame data, live data, visual inspection, and circuit checks before spending money on parts.
Frequently Asked Questions
Can I drive with the P0829 code?
If the check engine light is solid, you can usually drive to a safe location or mechanic. If the light is flashing, pull over immediately to prevent catastrophic engine or catalytic converter damage.
Will the P0829 code clear itself?
Once the underlying problem is fixed, the engine computer will run its self-checks. If it passes over several drive cycles, the light will turn off automatically. You can also clear it immediately using an OBD2 scanner.
Will this code fail an emissions test?
Yes. If the Check Engine Light is on due to the P0829 code, your Lamborghini will automatically fail an OBD2 plug-in emissions or smog test.
What should I check first for P0829?
Record freeze-frame data and related codes before clearing the fault. Inspect wiring, connectors, vacuum lines, fluid leaks, and fuses tied to the named system. Use live data or a multimeter to confirm the failed circuit before replacing parts.
Join the Discussion
Repair Estimate
Fuse, connector, wiring, cleaning, or basic inspection
Major component replacement after live data and circuit tests confirm failure
Costs vary widely; start with visual inspection and circuit confirmation to avoid unnecessary parts.
DIY Difficulty
Can usually be performed at home with basic hand tools.