Code
P2722
Generic
P — Powertrain
Pressure Control Solenoid E
Views:
UK: 29
EN: 41
RU: 21
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in solenoid E circuit
- Poor connector contact or corrosion at solenoid or control module
- Failed pressure control solenoid (stuck, clogged, or open coil)
- Low, dirty, or aerated transmission fluid
- Faulty transmission control module (TCM) or engine control module (ECM)
- Internal transmission hydraulic or valve body malfunction
Symptoms
- Check Engine / Transmission light (MIL) illuminated
- Harsh, delayed, or erratic shifting
- Extended flare or slip on particular gear changes
- Transmission may enter limp mode (limited gears)
- Unusual transmission noise or poor drivability
- Stored transmission-related fault codes
What to check
- Retrieve freeze frame and live data with a scan tool; note conditions when code set
- Check transmission fluid level, condition, and temperature
- Visually inspect wiring and connectors to solenoid E and TCM for damage/corrosion
- Measure solenoid coil resistance at the connector (engine off) and compare to spec
- Backprobe connector with engine running to verify supply voltage and ground while commanding solenoid
- Check for proper PWM duty cycle/frequency from the TCM with an oscilloscope or scan tool
Signal parameters
- Coil resistance (typical): ~8–40 ohms depending on application — consult vehicle spec
- Supply voltage: ~12 V battery when commanded (or switched + voltage present at feed circuit)
- Control signal: PWM output from TCM; typical frequency range 20–300 Hz
- Duty cycle: 0–100% depending on commanded pressure; PID should change duty when commanded
- Expected response: pressure or shift behavior should change with varying commanded duty
Diagnostic algorithm
- Confirm code and record freeze frame/live data. Check for other transmission codes that may relate.
- Verify transmission fluid level, smell, and color. Top or replace fluid if severely low/contaminated and retest.
- Visually inspect solenoid E connector and wiring for damage, corrosion, looseness, or pin push-out.
- With ignition off, disconnect solenoid harness and measure coil resistance between the solenoid terminals. Compare to factory spec.
- With harness connected, backprobe the connector. With ignition on/engine running, check for battery feed at the supply pin and stable ground at the control pin.
- Command the solenoid on and off using a scan tool while observing voltage/ground and/or oscilloscope waveform for PWM frequency and duty changes. Verify the solenoid responds (pressure/shift change) when commanded.
- If wiring and control signals are good but solenoid does not respond or resistance is out of range, replace solenoid E and retest.
- If replacement solenoid does not restore proper operation and wiring/signals are correct, inspect valve body and internal hydraulics for blockage or sticking spool. Consider transmission service.
- If all electrical and mechanical checks pass but fault returns, consider TCM diagnostics, reprogramming, or replacement per manufacturer procedures.
- After repairs, clear codes and perform a road test and extended checks to confirm the issue is resolved.
Likely causes
- Damaged or chafed harness to solenoid E
- Corroded pins at solenoid connector or TCM connector
- Solenoid coil resistance out of specification or intermittent
- Debris in valve body preventing spool movement
- Low fluid level or degraded fluid causing slow/erratic operation
- TCM driver failure or software fault
Fault status
Status
Transmission control detected abnormal operation of Pressure Control Solenoid E (circuit or performance). Immediate diagnosis of wiring, solenoid, fluid, and control module recommended.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P2722
LAND ROVER
P — Powertrain
Pressure control solenoid E
Views:
UK: 1
EN: 8
RU: 3
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring in solenoid E circuit
- Poor connector contact or corrosion at solenoid or control module
- Failed pressure control solenoid (stuck, clogged, or open coil)
- Low, dirty, or aerated transmission fluid
- Faulty transmission control module (TCM) or engine control module (ECM)
- Internal transmission hydraulic or valve body malfunction
Symptoms
- Check Engine / Transmission light (MIL) illuminated
- Harsh, delayed, or erratic shifting
- Extended flare or slip on particular gear changes
- Transmission may enter limp mode (limited gears)
- Unusual transmission noise or poor drivability
- Stored transmission-related fault codes
What to check
- Retrieve freeze frame and live data with a scan tool; note conditions when code set
- Check transmission fluid level, condition, and temperature
- Visually inspect wiring and connectors to solenoid E and TCM for damage/corrosion
- Measure solenoid coil resistance at the connector (engine off) and compare to spec
- Backprobe connector with engine running to verify supply voltage and ground while commanding solenoid
- Check for proper PWM duty cycle/frequency from the TCM with an oscilloscope or scan tool
Signal parameters
- Coil resistance (typical): ~8–40 ohms depending on application — consult vehicle spec
- Supply voltage: ~12 V battery when commanded (or switched + voltage present at feed circuit)
- Control signal: PWM output from TCM; typical frequency range 20–300 Hz
- Duty cycle: 0–100% depending on commanded pressure; PID should change duty when commanded
- Expected response: pressure or shift behavior should change with varying commanded duty
Diagnostic algorithm
- Confirm code and record freeze frame/live data. Check for other transmission codes that may relate.
- Verify transmission fluid level, smell, and color. Top or replace fluid if severely low/contaminated and retest.
- Visually inspect solenoid E connector and wiring for damage, corrosion, looseness, or pin push-out.
- With ignition off, disconnect solenoid harness and measure coil resistance between the solenoid terminals. Compare to factory spec.
- With harness connected, backprobe the connector. With ignition on/engine running, check for battery feed at the supply pin and stable ground at the control pin.
- Command the solenoid on and off using a scan tool while observing voltage/ground and/or oscilloscope waveform for PWM frequency and duty changes. Verify the solenoid responds (pressure/shift change) when commanded.
- If wiring and control signals are good but solenoid does not respond or resistance is out of range, replace solenoid E and retest.
- If replacement solenoid does not restore proper operation and wiring/signals are correct, inspect valve body and internal hydraulics for blockage or sticking spool. Consider transmission service.
- If all electrical and mechanical checks pass but fault returns, consider TCM diagnostics, reprogramming, or replacement per manufacturer procedures.
- After repairs, clear codes and perform a road test and extended checks to confirm the issue is resolved.
Likely causes
- Damaged or chafed harness to solenoid E
- Corroded pins at solenoid connector or TCM connector
- Solenoid coil resistance out of specification or intermittent
- Debris in valve body preventing spool movement
- Low fluid level or degraded fluid causing slow/erratic operation
- TCM driver failure or software fault
Fault status
Status
Transmission control detected abnormal operation of Pressure Control Solenoid E (circuit or performance). Immediate diagnosis of wiring, solenoid, fluid, and control module recommended.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 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
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Was this AI description helpful?
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