Fault Family System: Powertrain (P-Codes) 5 SAE Codes

Injector Control Pressure Fault

Diagnostic & Technical Explanation

P2288 (Injector Control Pressure Too High) applies to HEUI-type diesel injection, where a high-pressure oil pump generates the injection control pressure that actuates the injectors, and fires when that pressure is too high, too low, or erratic versus command. Low or erratic pressure most often traces to a worn high-pressure oil pump, a leaking injection pressure regulator (IPR) valve, or oil aerated by a low level or wrong viscosity; pressure too high points to an IPR stuck closed or its return path blocked by debris.

These 5 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 5 times.

Codes in this family (5)

Code	Definition	Repair coverage
P2288	Injector Control Pressure Too High	4 ranked fixes
P2289	Injector Control Pressure Too High - Engine Off	4 ranked fixes
P2290	Injector Control Pressure Too Low	4 ranked fixes
P2291	Injector Control Pressure Too Low - Engine Cranking	4 ranked fixes
P2292	Injector Control Pressure Erratic	4 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:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

Need All 15,886 Codes as Data?

Pipe-delimited CSV, Apache Parquet and a relational SQLite database, with commercial application rights and instant download. Built for scan tools, shop software and research - not assembled one web page at a time.

License OEM Complete · $149 Standard (SAE only) · $49

$49 Standard: 9,249 SAE codes · $149 OEM Complete: all 15,886 codes, including 6,637 OEM codes across 32 makes · $149 Heavy Duty: 4,212 fault pairs (J1939) · one-time · compare tiers