P2253
Sensor Negative Current Control Circuit High Bank 1 Sensor 1P2253 is a generic OBD-II powertrain diagnostic trouble code: Sensor Negative Current Control Circuit High Bank 1 Sensor 1. It is logged by the engine control unit when the scr/adblue monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.
What P2253 means
P2253 is stored when the ECM detects that the voltage or current in the control circuit for fuel pressure regulator 1 is below the minimum expected threshold. On direct injection and high-pressure common rail systems, the fuel pressure regulator (also called a fuel pressure control valve or inlet metering valve) is an ECM-driven solenoid that actively controls fuel rail pressure. A circuit low condition means the ECM cannot drive the regulator to the commanded position, losing active fuel pressure control.
Loss of fuel pressure regulation can manifest as excessively high or low rail pressure depending on the regulator mechanical fail-state. High-pressure direct injection systems are especially sensitive because fuel quantity delivered per injection event depends on precise rail pressure; even a moderate deviation from target causes measurable drivability issues and potential injector damage from over-pressure.
The most common electrical causes are a short to ground in the solenoid signal wire, an internally shorted regulator winding, or a failed ECM driver. Mechanical causes such as a seized or contaminated regulator valve may set a performance code rather than P2253 if the circuit itself remains electrically normal.
Common causes
Most-frequently reported root causes when P2253 is logged.
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1
Short to ground in the fuel pressure regulator signal or supply wire.
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2
Regulator solenoid winding internally shorted to its housing.
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3
Damaged wiring harness with compromised insulation causing a ground short.
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4
Corroded or contaminated regulator connector pins.
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5
Failed ECM internal driver for the fuel pressure regulator output.
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6
Fuel contamination in the high-pressure system corroding regulator internals and winding.
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7
Incorrect replacement regulator installed with a different coil resistance than specified.
Symptoms drivers notice
How to diagnose P2253
A typical diagnostic flow when this code is present.
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1
Record all DTCs; note any companion fuel rail pressure codes such as P0087 or P0088 that indicate the pressure consequence of the regulator fault.
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2
Inspect the fuel pressure regulator connector and harness for visible damage, corrosion, or chafing.
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3
Measure regulator solenoid resistance with the connector unplugged and compare to the manufacturer specification.
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4
Check supply voltage at the regulator connector with ignition on.
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5
With both the ECM and regulator connectors unplugged, verify no short to ground exists on the signal wire.
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6
If wiring is intact and solenoid resistance is abnormal, replace the fuel pressure regulator.
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7
After repair, monitor live fuel rail pressure under varying load conditions and confirm it tracks the target pressure.
Vehicles where we've handled P2253
Platforms in our catalogue with confirmed P2253 coverage.
Related powertrain codes
- B0001 — PCM Discrete Input Speed Signal Error
- B0004 — PCM Discrete Input Speed Signal Not Present
- C0359 — Four Wheel Drive Low Range (4LO) Discrete Output Circuit
- C0362 — 4LO Discrete Output Circuit High
- P2000 — NOx Adsorber Efficiency Below Threshold Bank 1
- P2001 — NOx Adsorber Efficiency Below Threshold Bank 2
Frequently asked questions
What happens to fuel pressure when P2253 is active?
The regulator defaults to its mechanical fail-state, which varies by design. Some regulators default open (low pressure) and others default closed (high pressure). Both conditions impair engine operation.
Is P2253 the same as a low fuel pressure code like P0087?
No. P0087 reports that measured rail pressure is below target. P2253 reports an electrical fault in the regulator circuit. P0087 may accompany P2253 as a consequence, but they indicate different root causes.
Can contaminated fuel cause P2253?
Fuel contamination can corrode the regulator internals and winding over time, eventually causing an internal short that manifests as P2253. Fuel system cleanliness is important for long-term regulator reliability.
Does P2253 apply to both port injection and direct injection systems?
P2253 applies to any system using an electronically controlled fuel pressure regulator on regulator 1. It is most commonly seen on high-pressure direct injection systems where active rail pressure control is critical.
Disabling P2253 in software
RaceTune can permanently disable P2253 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.
ECUs with a P2253 disable in our catalogue
Confirmed coverage from our recipe database — we support many more families. Upload your file and our identifier will match it automatically.
- Bosch EDC17C50 verified 1 software version
Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.
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