Code
P2287
Generic
P — Powertrain
Injector Control Pressure Sensor Circuit Intermittent
Views:
UK: 17
EN: 40
RU: 24
AI status
Completed
Completed
100%
Causes
- Loose, corroded or poorly seated sensor connector or terminal(s)
- Damaged, chafed or pinched wiring (open, short to ground, short to battery)
- Intermittent sensor internal fault
- Poor or intermittent sensor ground or reference supply
- Intermittent ECM/PCM input fault or poor PCB solder joint
- Contamination or water ingress into connector
Symptoms
- MIL (Check Engine Light) illuminated intermittently
- Intermittent rough idle or hesitations
- Reduced engine power or occasional limp-home mode
- Hard starting or stall conditions under some circumstances
- Inconsistent fuel pressure readings on scan tool
- Codes may appear/disappear with vehicle movement or temperature changes
What to check
- Read and record freeze-frame and all related codes and pending codes
- Scan live ICP (or fuel rail/injector pressure) PID while key ON, cranking and running
- Perform a wiggle test of the harness and connector while observing live data/monitor for code set
- Visually inspect connector for corrosion, bent pins, water entry, or damage
- Check for proper 5V reference and sensor ground at the connector
- Measure signal voltage at sensor with meter or oscilloscope during engine conditions
Signal parameters
- Typical sensor reference: 5.0 V (nominal) from PCM
- Typical signal range: ~0.5 V at low pressure to ~4.5 V at high pressure (manufacturer-specific)
- Expected behavior: stable voltage correlated to rail/ICP; small, smooth changes with RPM/load
- Intermittent fault: sudden drops to 0 V, spikes to reference or battery voltage, or erratic noise on the signal
Diagnostic algorithm
- Retrieve freeze-frame, all stored and pending codes. Note when fault occurs (temp, load, key cycles).
- Reproduce the fault with a scan tool connected. Monitor ICP/fuel pressure PID while performing key-on, crank and run sequences and light driving. Watch for dropouts or erratic values.
- Visually inspect the sensor connector and wiring harness. Unplug connector, inspect pins for corrosion, bent pins or water. Repair any damage.
- Backprobe the sensor connector: verify 5V reference present with key ON, good ground continuity to chassis, and signal voltage behavior during key on/crank/run. Compare to expected ranges.
- Perform a wiggle test on the harness and connector while monitoring signal/scan tool to find intermittent opens/shorts. Also check for changes with engine vibration and temperature.
- If intermittent remains, use a multimeter to check continuity and resistance of wiring to the ECM while moving the harness. If available, use an oscilloscope to look for noise, dropouts or spikes on the signal.
- Repair any damaged wiring, terminals or connector bodies (replace pins, solder or crimp repairs using OEM-style terminals, apply dielectric grease, secure harness).
- If wiring and connector are good and intermittent persists, replace the ICP sensor. After replacement, clear codes and test drive to confirm the issue is resolved.
- If problem remains after sensor and wiring repairs, consider ECM input fault—verify with module diagnostics or replacement as last step (confirm with manufacturer procedures).
- After repair, clear codes and verify readiness monitors; re-check for any related codes (fuel rail pressure/injector control related).
Likely causes
- Connector terminals oxidized or pushed back, causing intermittent contact
- Broken wire inside harness that moves under vibration (wiggle-sensitive)
- Sensor intermittently failing under temperature or vibration
- Intermittent short to voltage or ground when harness moves
- Poor ground at engine block or sensor mounting point
Fault status
Status
P2287 — Injector Control Pressure Sensor Circuit Intermittent: ECM detected an unstable or intermittent signal from the injector control/fuel pressure sensor circuit. Inspect sensor, connector, and wiring for intermittent connection or damage.
Repair difficulty: Medium
Diagnostic time: 1-3 hours
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