P0806 Code: Meaning, Symptoms, Causes & Fix

Overview

Symptoms

• increased fuel use
• reduced performance
• rough operation in certain conditions

Common causes

• Component out of calibration affecting clutch position sensor circuit range/performance malfunction
• Mechanical restriction affecting response
• Connector pin damage/corrosion or harness stress near related components

How to diagnose P0806

1. Confirm P0806 and capture freeze-frame data with a professional scan tool.
2. Inspect wiring, connectors, and grounds related to clutch position sensor circuit range/performance malfunction for obvious defects.
3. Compare commanded vs actual values in live data under the same operating condition.
4. Check for related DTCs to identify the root-cause chain before replacing parts.
5. After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code P0806

Moderate: This code is moderate severity: the vehicle may still operate, but fault progression can increase repair cost over time.

Can you drive with P0806?

Most vehicles can be driven short-term with P0806, but postpone heavy load/highway driving until repaired.

If the warning lamp is flashing or drivability/safety is affected, avoid driving and diagnose immediately.

How to fix it (step-by-step)

1. Repair obvious wiring/connector faults first to prevent repeat parts replacement.
2. Address the root fault mode (performance) in the clutch position sensor circuit range/performance malfunction circuit/system.
3. Apply the required relearn/adaptation procedure if specified by service information.
4. Road-test and verify P0806 remains cleared under the conditions that originally set the code.

Fix options

• Clean/repair mechanical restriction where applicable.
• Test component operation against service specs.
• Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$200-$900

Common mistakes when diagnosing P0806

• Replacing parts without verifying voltage, ground, and signal integrity first.
• Ignoring related stored/pending codes that indicate upstream faults.
• Skipping post-repair verification drive cycle and readiness checks.

P0806 in common vehicles

P0806 appears across makes such as BMW, Mercedes-Benz, Audi, Volvo. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes P0806?

P0806 is commonly set by performance faults affecting clutch position sensor circuit range/performance malfunction.

How much does it cost to fix P0806?

For P0806, repair costs are typically $200-$900 depending on exact root cause, labor rates, and part quality.

Can I clear P0806 without repair?

You can clear P0806 temporarily, but the code usually returns until the underlying fault is corrected.

Helpful tools

• Estimate repair cost
• Decode your VIN
• Calculate fuel cost