MechanicDB
Fault Family System: Powertrain (P-Codes) 59 SAE Codes

Injection Timing Performance

Diagnostic & Technical Explanation
Code P01CB (Cylinder 1 Injection Timing Performance - Over Retarded) sets when a cylinder's actual injection timing or fuel quantity, as learned by the ECM's adaptive strategy, deviates from the commanded value beyond the over-advanced/over-retarded limit. Causes are a worn or partially clogged injector, carbon deposits changing injector spray characteristics, or degraded injector drive circuitry.

These 59 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 59 times.

Codes in this family (59)

CodeDefinitionRepair coverage
P01CBCylinder 1 Injection Timing Performance - Over Retarded3 ranked fixes
P01CCCylinder 1 Injection Timing Performance - Over Advanced3 ranked fixes
P01CDCylinder 2 Injection Timing Performance - Over Retarded3 ranked fixes
P01CECylinder 2 Injection Timing Performance - Over Advanced3 ranked fixes
P01CFCylinder 3 Injection Timing Performance - Over Retarded3 ranked fixes
P01D0Cylinder 3 Injection Timing Performance - Over Advanced3 ranked fixes
P01D1Cylinder 4 Injection Timing Performance - Over Retarded3 ranked fixes
P01D2Cylinder 4 Injection Timing Performance - Over Advanced3 ranked fixes
P01D3Cylinder 5 Injection Timing Performance - Over Retarded3 ranked fixes
P01D4Cylinder 5 Injection Timing Performance - Over Advanced3 ranked fixes
P01D5Cylinder 6 Injection Timing Performance - Over Retarded3 ranked fixes
P01D6Cylinder 6 Injection Timing Performance - Over Advanced3 ranked fixes
P01D7Cylinder 7 Injection Timing Performance - Over Retarded3 ranked fixes
P01D8Cylinder 7 Injection Timing Performance - Over Advanced3 ranked fixes
P01D9Cylinder 8 Injection Timing Performance - Over Retarded3 ranked fixes
P01DACylinder 8 Injection Timing Performance - Over Advanced3 ranked fixes
P01DBCylinder 9 Injection Timing Performance - Over Retarded3 ranked fixes
P01DCCylinder 9 Injection Timing Performance - Over Advanced3 ranked fixes
P01DDCylinder 10 Injection Timing Performance - Over Retarded3 ranked fixes
P01DECylinder 10 Injection Timing Performance - Over Advanced3 ranked fixes
P01DFCylinder 11 Injection Timing Performance - Over Retarded3 ranked fixes
P01E0Cylinder 11 Injection Timing Performance - Over Advanced3 ranked fixes
P01E1Cylinder 12 Injection Timing Performance - Over Retarded3 ranked fixes
P01E2Cylinder 12 Injection Timing Performance - Over Advanced3 ranked fixes
P020ACylinder 1 Injection Timing3 ranked fixes
P020BCylinder 2 Injection Timing3 ranked fixes
P020CCylinder 3 Injection Timing3 ranked fixes
P020DCylinder 4 Injection Timing3 ranked fixes
P020ECylinder 5 Injection Timing3 ranked fixes
P020FCylinder 6 Injection Timing3 ranked fixes
P0216Injector/Injection Timing Control Circuit3 ranked fixes
P021ACylinder 7 Injection Timing3 ranked fixes
P021BCylinder 8 Injection Timing3 ranked fixes
P021CCylinder 9 Injection Timing3 ranked fixes
P021DCylinder 10 Injection Timing3 ranked fixes
P021ECylinder 11 Injection Timing3 ranked fixes
P021FCylinder 12 Injection Timing3 ranked fixes
P026BInjection Timing Performance3 ranked fixes
P026CFuel Injection Quantity A Lower Than Expected3 ranked fixes
P026DFuel Injection Quantity A Higher Than Expected3 ranked fixes
P05ECCold Start Injection Timing Performance3 ranked fixes
P21B6Cold Start Cylinder 1 Injection Timing3 ranked fixes
P21B7Cold Start Cylinder 2 Injection Timing3 ranked fixes
P21B8Cold Start Cylinder 3 Injection Timing3 ranked fixes
P21B9Cold Start Cylinder 4 Injection Timing3 ranked fixes
P21BACold Start Cylinder 5 Injection Timing3 ranked fixes
P21BBCold Start Cylinder 6 Injection Timing3 ranked fixes
P21BCCold Start Cylinder 7 Injection Timing3 ranked fixes
P21BDCold Start Cylinder 8 Injection Timing3 ranked fixes
P21BECold Start Cylinder 9 Injection Timing3 ranked fixes
P21BFCold Start Cylinder 10 Injection Timing3 ranked fixes
P21C0Cold Start Cylinder 11 Injection Timing3 ranked fixes
P21C1Cold Start Cylinder 12 Injection Timing3 ranked fixes
P2DD5Fuel Injection Quantity B Lower Than Expected3 ranked fixes
P2DD6Fuel Injection Quantity B Higher Than Expected3 ranked fixes
P2DDCFuel Injection Quantity C Lower Than Expected3 ranked fixes
P2DDDFuel Injection Quantity C Higher Than Expected3 ranked fixes
P2DDEFuel Injection Quantity D Lower Than Expected3 ranked fixes
P2DDFFuel Injection Quantity D Higher Than Expected3 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here: