P1387 Code: Meaning, Symptoms, Causes & Fix

Overview

Code P1387 indicates a fault in Variable Cam Timing Solenoid #2 Circuit Malfunction, typically within engine synchronization and valve timing.

Symptoms

rough running or misfire
hard start when cold
loss of power at mid/high RPM

Common causes

Open circuit in wiring affecting variable cam timing solenoid #2 circuit malfunction
Broken terminal inside harness
Connector pin damage/corrosion or harness stress near related components

How to diagnose P1387

Confirm P1387 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to variable cam timing solenoid #2 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 P1387

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

Can you drive with P1387?

Most vehicles can be driven short-term with P1387, 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 variable cam timing solenoid #2 circuit malfunction circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify P1387 remains cleared under the conditions that originally set the code.

Fix options

Restore continuity and verify pin tension.
Clear corrosion and protect terminals.
Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$300-$1400

Common mistakes when diagnosing P1387

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.

P1387 in common vehicles

P1387 appears across makes such as Ford, Toyota, Honda, Chevrolet. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes P1387?

P1387 is commonly set by open faults affecting variable cam timing solenoid #2 circuit malfunction.

How much does it cost to fix P1387?

For P1387, repair costs are typically $300-$1400 depending on exact root cause, labor rates, and part quality.

Can I clear P1387 without repair?

You can clear P1387 temporarily, but the code usually returns until the underlying fault is corrected.