P2290 Injection Control Pressure Too Low — Causes & Fix
Updated for 2026 diagnostics & repair guidance
P2290 at a Glance
What it means
Injection control pressure is below the commanded level.
Most common cause
Blocked fuel filter or restricted supply line
Severity
Moderate to serious — rail-pressure faults cause power loss and non-starts.
Can you drive?
Short distances in limp mode only. Diagnose promptly.
Typical repair cost
£40-£150 for sensor/regulator work; £100-£350 per injector where back-leak is the cause.
What Does P2290 Mean?
P2290 flags injection control pressure below demand. On common-rail engines this behaves like rail-pressure starvation: hard starting, power loss and stalling under load. Supply, pump and injector back-leak are tested in that order.
Common Causes
Injector-Related Causes
Excessive injector return flow
Worn injectors returning excess fuel unbalance the low-pressure circuit's measured pressure.
Other Possible Causes
Blocked fuel filter or restricted supply line
A clogged filter or kinked/blocked pipe starves the low-pressure side.
Weak lift pump
A tired in-tank or inline lift pump cannot hold the specified low-side pressure.
Symptoms Drivers Notice
- Loss of power / limp mode
- Hard or extended starting, especially when warm
- Engine cutting out or refusing to restart
- Engine management light on
Vehicles Commonly Affected
Can You Still Drive with P2290?
Limp mode usually allows a short, gentle drive but rail-pressure faults can cause sudden cut-outs. Do not ignore a hot-restart failure — it typically worsens quickly.
How Mechanics Diagnose P2290
- 1
Compare requested vs actual rail pressure
Check live data at idle, under load and while cranking.
- 2
Run an injector leak-off test
Excessive back-leak return identifies leaking injectors.
- 3
Test the regulator / control valve
Check the valve's response and inspect its wiring circuit.
- 4
Check the low-pressure supply
Inspect the lift pump, filter and pipework before condemning high-pressure parts.
Repair Solutions & Costs
Replace leaking injectors
Fit bench-tested remanufactured units and code them to the ECU.
Replace the sensor or control valve
Replace the rail-pressure sensor or control valve where testing isolates it.
Repair control-circuit wiring
Repair wiring or connector faults found on the control circuit.
Replacing injectors? Browse our remanufactured diesel injectors, reconditioned injectors or refurbished diesel injectors — all bench-tested with a 12-month warranty.
When Injector Replacement Is Required
When the leak-off test shows one or more injectors returning well above the others, those injectors are the cause of the pressure loss and must be replaced — regulators and sensors cannot compensate for internal injector leakage.
Compatible Remanufactured Injectors
OEM bench-tested injectors for engines affected by P2290 — verified pricing, 12-month warranty, free UK delivery.
Delphi A6510704987
Remanufactured Delphi 28272472DNR diesel injector for Mercedes-Benz 2.1 CDI OM651 engines. Direct-fit replacement for C-Class, E-Class, CLA, GLA, GLK, Vito, V-Class, Sprinter and SLK applications. Cross-references A6510704987, A6510702387, HRD351, 28272472. OEM-tested and calibrated with full flow and leak-back verification. Includes 12-month unlimited-mileage warranty. Supplied as an exchange unit — return your old injector within 30 days.
Fits: OM651, OM651.911, OM651.924, OM651.925
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Bosch 0445110613
BMW 2.0d B47 Remanufactured Common Rail Injector
Fits: B47, B47C20A, B47D20, B47D20A
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Bosch 13538514148
2.0L Diesel Remanufactured Solenoid Injector (BMW B47)
Fits: B47, B47C20A, B47D20, B47D20A
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Delphi 28307309
Delphi remanufactured diesel injector for Mercedes OM651 applications. OEM tested and calibrated on CR318 PRO test bench. 12-month warranty included. Free UK delivery. Suitable for professional garage use. Exchange unit — return your old injector within 30 days.
Fits: OM651.955, OM651.956, OM651.957, OM651.958
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Delphi 28388960
Remanufactured Delphi 28388960 diesel injector for Ford 2.0 TDCi and Peugeot/Citroen 2.0 HDi/BlueHDi DW10 engines. Direct replacement for Ford Mondeo, Kuga, S-Max, Galaxy, Focus, C-Max, Edge and Peugeot 308, 508, 3008, 5008, Expert, Citroen C4, C5, DS4, DS5, Jumpy, Jumper applications. Cross-references 28602948, 9674984080, DS7Q9F593BA, HRD360. OEM-tested and calibrated with full flow and leak-back verification. Includes 12-month unlimited-mileage warranty. Supplied as an exchange unit — return your old injector within 30 days.
Fits: DW10C, DW10CB, DW10CT, DW10CTED4
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Bosch 0445110601
BMW 2.0d N47 Remanufactured Common Rail Injector
Fits: N47C20A, N47D20A, N47D20C
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Bosch 0445110616
BMW 2.0L / 3.0L Diesel Remanufactured Common-Rail Injector (N47/N57)
Fits: N47D20B, N47D20C, N47D20O1
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Siemens VDO / Continental 5WS40156Z
DW10 / 2.0 HDi / 2.0 TDCi / D4204T Remanufactured Common Rail Injector
Fits: DW10CB, DW10CTED4
View injectorCompatible Injector Part Numbers
6 injectors compatible with engines affected by P2290.
Cross Reference Numbers
OEM and alternative part numbers for injectors affected by P2290.
Affected Vehicle & Engine Combinations
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Frequently Asked Questions
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