Injection Timing Control Circuit Malfunction
What does P0216 mean?
The P0216 code means the vehicle's onboard diagnostic system has detected: Injection Timing Control Circuit Malfunction. This is a critical severity code.
Common Symptoms
- Check Engine Light on
- Engine will not start or starts and immediately stalls
- Severe engine knock or detonation
- Excessive white or black exhaust smoke
- Significant loss of power
Probable Causes (Ranked by Likelihood)
- Failed injection timing stepper motor or solenoid Very High
- Wiring issue in the timing control circuit High
- Faulty injection pump timing mechanism Moderate
- Worn timing belt or chain affecting pump drive Moderate
- PCM timing control driver failure Low
Step-by-Step Diagnostic Procedure
-
Use a scan tool to read actual vs. desired injection timing. Significant deviation confirms a timing control problem.
-
Check the injection timing control solenoid or stepper motor for proper resistance per manufacturer specifications.
-
Verify power and ground to the timing control circuit at the solenoid connector.
-
On diesel engines with mechanical injection pumps, check the timing advance mechanism for seized or worn components.
-
Inspect the timing belt or chain that drives the injection pump for proper alignment and wear.
Frequently Asked Questions
Can I drive with code P0216?
No. Incorrect injection timing can cause severe engine knock, potential piston damage, and excessive exhaust temperatures. Do not drive the vehicle -- have it towed to a diesel specialist.
Is P0216 a serious code?
Yes, P0216 is a critical code, especially on diesel engines. Incorrect injection timing can cause catastrophic engine damage including cracked pistons, bent connecting rods, and destroyed turbochargers from excessive exhaust temperatures.
Is P0216 common on the Cummins 5.9L?
Yes. The 5.9L Cummins with the VP44 injection pump is notorious for P0216, often caused by a failing pump, lift pump issues causing low fuel pressure to the VP44, or electrical problems in the timing control circuit.