Injection Timing Control Circuit Malfunction
The P0216 code indicates a malfunction in the injection timing control circuit, which is responsible for adjusting fuel injection timing based on engine load and speed. This circuit typically involves a solenoid or actuator that controls the injection pump timing. When the Powertrain Control Module (PCM) detects an electrical fault or incorrect feedback from this circuit, it sets the code. Common causes include wiring issues, a faulty injection timing solenoid, or a failing injection pump. This can lead to poor engine performance, hard starting, and increased emissions.
01. Most Common Causes
- Faulty injection timing solenoid
- Wiring or connector issues in the timing control circuit
- Failed injection pump
- PCM software or hardware problem
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine hard to start or no start
- Rough idle or misfire
- Poor fuel economy and reduced power
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Visually inspect the injection timing solenoid wiring and connectors for damage or corrosion.
Step 3: Test the injection timing solenoid resistance and compare to manufacturer specifications.
Step 4: Check for proper voltage and ground at the solenoid connector with the ignition on.
Step 5: If wiring and solenoid are okay, test the injection pump timing and mechanical components.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with P0216 as it can cause engine stalling, poor performance, and potential damage to the injection pump or engine.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repair costs vary: a solenoid replacement may be $200-$400, while injection pump replacement can exceed $1000.