What Does P021E Mean?
This code indicates cylinder 11 injection timing is outside the acceptable range. The ECM has detected that the cylinder 11 injector is not firing at the correct crankshaft position on a V12 or other high-cylinder-count engine. This affects combustion quality on that specific cylinder.
Common Causes
35%
Cylinder 11 injector with degraded internal components causing timing deviation
25%
Carbon deposits on the cylinder 11 injector nozzle altering delivery timing
20%
High-pressure fuel system pressure wave anomaly affecting cylinder 11
20%
Engine timing chain stretch or position sensor error creating a timing offset
Diagnostic Steps
1
Step 1: Review injection timing correction values across all cylinders to isolate cylinder 11.
2
Step 2: Perform an injector balance test for cylinder 11.
3
Step 3: Swap the cylinder 11 injector with an adjacent cylinder if accessible.
4
Step 4: Inspect the cylinder 11 injector for carbon buildup.
5
Step 5: Verify timing chain/belt integrity and position sensor signal quality.
Estimated Repair Cost
$250 - $1,000
Parts + labor, varies by vehicle and location
This code indicates cylinder 11 injection timing is outside the acceptable range. The ECM has detected that the cylinder 11 injector is not firing at the correct crankshaft position on a V12 or other high-cylinder-count engine. This affects combustion quality on that specific cylinder.
The most common cause of P021E (Cylinder 11 Injection Timing) is: Cylinder 11 injector with degraded internal components causing timing deviation
Typical repair costs for P021E range from $250 to $1,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Injection timing faults on cylinder 11 increase emissions and combustion noise. Extended operation may cause progressive engine damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P021E to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System / Engine Timing
Difficulty
Type
Generic (SAE)
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