Code
P02B5
Generic
P — Powertrain
Cylinder 7 - Injector Leaking
Views:
UK: 18
EN: 23
RU: 15
AI status
Completed
Completed
100%
Causes
- Internal leak inside cylinder 7 injector (worn/damaged pintle or needle)
- Leaking injector O-ring or seal allowing fuel to pool or leak into intake/cylinder
- High fuel rail pressure or malfunctioning pressure regulator causing seepage
- Contaminated injector (deposits preventing full closure)
- Faulty injector driver or ECM commanding abnormal current
- Wiring short to voltage at injector circuit or poor connector
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or vibration, especially at idle
- Misfire on cylinder 7 (stored misfire code such as P0307 may also appear)
- Excessive fuel smell from engine bay or exhaust
- Increased fuel consumption (poor fuel economy)
- Black/sooty exhaust or gray smoke on acceleration
What to check
- Read and record freeze frame and related codes (misfire, fuel trim, rail pressure).
- Visual inspection for external fuel leaks at injector 7, damaged wiring, connectors, or torn O-rings.
- Inspect spark plug for wetness/fuel staining in cylinder 7 compared with other cylinders.
- Compare short-term and long-term fuel trim and misfire counts for cylinder 7 using a scan tool.
- Measure fuel rail pressure and compare to specification while key ON and during cranking/idle.
- Measure injector electrical resistance and compare to spec; check for short to battery or ground.
Signal parameters
- Injector pulse width (ms) for cylinder 7
- Injector duty cycle (%) or commanded on-time
- Injector driver current (A) or waveform shape
- Fuel rail pressure (psi/bar) and sensor voltage
- Short-term and long-term fuel trims (STFT/LTFT) [%]
- Cylinder-specific misfire counts (cylinder 7)
Diagnostic algorithm
- Verify and record all stored codes and freeze-frame data. Note fuel trims, rail pressure, and misfire counts.
- Perform a visual inspection of injector 7, connector, wiring harness, and O-rings. Repair any obvious external leaks or wiring damage.
- With engine off, check injector 7 resistance against specification and compare to other injectors. If out of spec, replace injector.
- Check fuel rail pressure at key ON and during idle/operation to ensure pressure is within spec and regulator functioning.
- Inspect the spark plug in cylinder 7 for fouling or fuel saturation which indicates leakage. Replace plug if contaminated.
- Perform an injector leak test: either pressure decay test on the rail, remove the injector and observe for dripping, or use a flow/return test setup per service manual.
- Use a scan tool/oscilloscope to check injector drive waveform and current; look for abnormal command or leakage current when injector is off.
- If tests indicate mechanical leakage or contamination, remove and replace or rebuild injector 7. Replace O-rings/seals and re-torque to spec.
- If the injector tests good but fault persists, swap injector 7 with a known-good injector to see if code follows the injector or remains on cylinder 7 (helps isolate wiring/driver vs injector).
- If fault follows the original injector, replace it. If fault remains on cylinder 7 after swap, inspect wiring, connector, and ECM/driver circuit; consult manufacturer service manual for driver testing.
- After repair, clear codes and perform test drive/road cycle while monitoring fuel trims, misfire counts, and rail pressure to confirm issue is resolved.
Likely causes
- Internal mechanical leak in cylinder 7 injector
- Damaged/seated O-ring or seal on injector 7
- Contaminated/clogged injector preventing proper seating
- Faulty injector driver (less common) or wiring/connector issue
Fault status
Status
Injector leak detected at cylinder 7. Possible internal or seal leak allowing fuel when injector should be closed, causing rich condition or misfire.
Repair difficulty: Medium
Diagnostic time: 1.0 - 3.0 hours
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Code
P02B5
LAND ROVER
P — Powertrain
balance restricted to injector 7 - injector leakage
Views:
UK: 4
EN: 9
RU: 4
AI status
Completed
Completed
100%
Causes
- Internal leak inside cylinder 7 injector (worn/damaged pintle or needle)
- Leaking injector O-ring or seal allowing fuel to pool or leak into intake/cylinder
- High fuel rail pressure or malfunctioning pressure regulator causing seepage
- Contaminated injector (deposits preventing full closure)
- Faulty injector driver or ECM commanding abnormal current
- Wiring short to voltage at injector circuit or poor connector
Symptoms
- Check Engine Light (MIL) illuminated
- Rough idle or vibration, especially at idle
- Misfire on cylinder 7 (stored misfire code such as P0307 may also appear)
- Excessive fuel smell from engine bay or exhaust
- Increased fuel consumption (poor fuel economy)
- Black/sooty exhaust or gray smoke on acceleration
What to check
- Read and record freeze frame and related codes (misfire, fuel trim, rail pressure).
- Visual inspection for external fuel leaks at injector 7, damaged wiring, connectors, or torn O-rings.
- Inspect spark plug for wetness/fuel staining in cylinder 7 compared with other cylinders.
- Compare short-term and long-term fuel trim and misfire counts for cylinder 7 using a scan tool.
- Measure fuel rail pressure and compare to specification while key ON and during cranking/idle.
- Measure injector electrical resistance and compare to spec; check for short to battery or ground.
Signal parameters
- Injector pulse width (ms) for cylinder 7
- Injector duty cycle (%) or commanded on-time
- Injector driver current (A) or waveform shape
- Fuel rail pressure (psi/bar) and sensor voltage
- Short-term and long-term fuel trims (STFT/LTFT) [%]
- Cylinder-specific misfire counts (cylinder 7)
Diagnostic algorithm
- Verify and record all stored codes and freeze-frame data. Note fuel trims, rail pressure, and misfire counts.
- Perform a visual inspection of injector 7, connector, wiring harness, and O-rings. Repair any obvious external leaks or wiring damage.
- With engine off, check injector 7 resistance against specification and compare to other injectors. If out of spec, replace injector.
- Check fuel rail pressure at key ON and during idle/operation to ensure pressure is within spec and regulator functioning.
- Inspect the spark plug in cylinder 7 for fouling or fuel saturation which indicates leakage. Replace plug if contaminated.
- Perform an injector leak test: either pressure decay test on the rail, remove the injector and observe for dripping, or use a flow/return test setup per service manual.
- Use a scan tool/oscilloscope to check injector drive waveform and current; look for abnormal command or leakage current when injector is off.
- If tests indicate mechanical leakage or contamination, remove and replace or rebuild injector 7. Replace O-rings/seals and re-torque to spec.
- If the injector tests good but fault persists, swap injector 7 with a known-good injector to see if code follows the injector or remains on cylinder 7 (helps isolate wiring/driver vs injector).
- If fault follows the original injector, replace it. If fault remains on cylinder 7 after swap, inspect wiring, connector, and ECM/driver circuit; consult manufacturer service manual for driver testing.
- After repair, clear codes and perform test drive/road cycle while monitoring fuel trims, misfire counts, and rail pressure to confirm issue is resolved.
Likely causes
- Internal mechanical leak in cylinder 7 injector
- Damaged/seated O-ring or seal on injector 7
- Contaminated/clogged injector preventing proper seating
- Faulty injector driver (less common) or wiring/connector issue
Fault status
Status
Injector leak detected at cylinder 7. Possible internal or seal leak allowing fuel when injector should be closed, causing rich condition or misfire.
Repair difficulty: Medium
Diagnostic time: 1.0 - 3.0 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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