P1693 Code: Meaning, Symptoms, Causes & Fix

Overview

Code P1693 indicates a fault in Turbo Charge Control Circuit Malfunction, typically within air metering and throttle control.

Symptoms

engine feels underpowered
surging or unstable idle
occasional limp mode

Common causes

Disconnected or loose connector affecting turbo charge control circuit malfunction
Broken terminal inside harness
Connector pin damage/corrosion or harness stress near related components

How to diagnose P1693

Confirm P1693 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to turbo charge control circuit malfunction for obvious defects.
Use a continuity test from module pin to component to identify opens/high resistance.
Check for related DTCs to identify the root-cause chain before replacing parts.
After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code P1693

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

Can you drive with P1693?

Most vehicles can be driven short-term with P1693, 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)

Repair obvious wiring/connector faults first to prevent repeat parts replacement.
Address the root fault mode (open) in the turbo charge control circuit malfunction circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify P1693 remains cleared under the conditions that originally set the code.

Fix options

Repair open circuit and secure connector lock.
Restore continuity and verify pin tension.
Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$180-$900

Common mistakes when diagnosing P1693

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.

P1693 in common vehicles

P1693 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 P1693?

P1693 is commonly set by open faults affecting turbo charge control circuit malfunction.

How much does it cost to fix P1693?

For P1693, repair costs are typically $180-$900 depending on exact root cause, labor rates, and part quality.

Can I clear P1693 without repair?

You can clear P1693 temporarily, but the code usually returns until the underlying fault is corrected.