P2385 serious

Fuel Injection Timing Control Circuit Intermittent

The P2385 code means the vehicle's onboard diagnostic system has detected: Fuel Injection Timing Control Circuit Intermittent. This is a serious severity code.

My Garage →
Keep driving?
Short distances only
DIY difficulty
hard
Estimated cost
$300 - $1,500 (parts and labor)
Recommended Tool
ANCEL AD310 OBD-II Scanner

Best-selling code reader on Amazon. Reads and clears check engine codes on any 1996+ vehicle. Under $30.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Every Tech Needs This
AstroAI Digital Multimeter

Essential for diagnosing sensor codes, checking voltage, and testing circuits. Under $15 and pays for itself on the first job.

Check Price on Amazon

Affiliate link -- we earn a commission at no extra cost to you.

Common Symptoms

  • Check Engine Light on
  • Engine hard starting or no start condition
  • Rough idle and engine knocking
  • Excessive smoke from exhaust
  • Significant power loss

Probable Causes (Ranked by Likelihood)

  • Loose sensor connector at fuel injection pump Very High
  • Chafed or damaged wiring in pump harness High
  • Failing pump speed/timing sensor Moderate
  • PCM connector pin issue Low

Step-by-Step Diagnostic Procedure

  1. Retrieve P2385 and check for related fuel system codes

  2. Monitor injection pump timing and speed data with a scan tool

  3. Inspect injection pump sensor wiring and connectors for damage

  4. Verify injection pump timing alignment marks are correct

Frequently Asked Questions

What does P2385 mean?

P2385 relates to the fuel injection pump system: Fuel Injection Timing Control Circuit Intermittent. This code is most commonly seen on diesel vehicles where precise pump timing is critical.

Can I drive with P2385?

Drive only short distances to a shop. Fuel injection pump issues can cause hard starting, poor performance, and potential engine damage from incorrect timing.

How much does it cost to fix P2385?

Costs range from $300 for sensor or wiring repairs to $1,500+ if the injection pump itself needs replacement or rebuilding.

Sources

This page is built from documented references. Verify against your own service info before repair work.

Explore More

Search codes Vehicle-specific fixes Guides By make

Was this helpful?

Share carcodefinder.com with a friend who needs to decode their check engine light.

Browse by symptom → Read repair guides → Fixes by vehicle →