Code
P0243
Generic
P — Powertrain
Turbocharger/Supercharger Wastegate Actuator A
Views:
UK: 24
EN: 35
RU: 27
AI status
Completed
Completed
100%
Causes
- Open or short in actuator wiring harness or connector
- Poor connector pin contact, corrosion, or bent pins
- Failed wastegate actuator (electrical or internal mechanical)
- Failed boost control solenoid/valve (if used in circuit)
- Restricted or leaking vacuum/boost lines (for vacuum actuators)
- Faulty PCM or poor PCM ground/reference
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power or limp-home mode
- Turbo overboost or underboost conditions
- Poor acceleration and engine response
- Unusual boost pressure readings on scan tool
- Possible abnormal turbo noises if actuator stuck
What to check
- Read and record freeze frame and live data with a scan tool (boost, commanded duty, actual position if available)
- Visual inspection of actuator, connector, wiring harness, and vacuum/boost lines
- Backprobe connector to check reference voltage, signal voltage, and ground with key ON and while commanding actuator
- Measure coil or solenoid resistance and compare to service data (or typical expected range)
- Wiggle test wiring while observing live data for intermittent changes
- Command actuator or control solenoid with a scan tool and observe movement or change in boost
Signal parameters
- Reference supply: typically 5V or battery voltage depending on actuator type — consult service data
- Control: PCM may use PWM (duty cycle 0–100%) to control solenoid/actuator
- Typical solenoid coil resistance (vehicle-dependent): approximately 10–50 ohms (consult service manual)
- Position sensor output (if fitted): about 0.5–4.5 V across travel — verify with manufacturer specs
- When commanded ON, expect a measurable change in duty cycle/voltage and corresponding actuator movement
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data. Note related turbo, MAP, or boost sensor codes.
- Visually inspect actuator, connector, wiring, and any vacuum/boost hoses for damage or disconnection.
- With ignition ON (engine off), backprobe the actuator connector and verify reference voltage, ground, and signal. Compare to expected values in service information.
- Measure resistance of the actuator/solenoid coil. If open or significantly out of range, replace actuator/solenoid.
- Use a scan tool to command the actuator or boost control solenoid while observing live boost and signal/duty values. Confirm actuator moves or solenoid responds.
- Perform continuity checks from actuator connector to PCM pins; check for shorts to battery and ground.
- If actuator is vacuum-operated, check vacuum supply and operation of any control valves; verify the wastegate linkage moves freely and is not seized or obstructed.
- Repair any wiring/connectors or replace faulty actuator/solenoid. Clear codes and road-test to confirm proper boost control and no return of the code.
- If wiring and actuator test good but code persists, consider PCM diagnostics or replacement only after confirming inputs/outputs at the PCM.
Likely causes
- Damaged connector or wiring to the actuator
- Failed wastegate actuator or control solenoid
- Corroded or loose connector pins
- Vacuum/boost hose leak (if actuator is vacuum-operated)
Fault status
Status
P0243 - Turbocharger/Supercharger Wastegate Actuator A Circuit Range/Performance
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours (varies by vehicle and access)
Similar codes
Workshop Manuals
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Code
P0243
GWM
P — Powertrain
- Turbocharger Solenoid A Malfunction
Views:
UK: 5
EN: 12
RU: 9
AI status
Completed
Completed
100%
Causes
- Open or short in actuator wiring harness or connector
- Poor connector pin contact, corrosion, or bent pins
- Failed wastegate actuator (electrical or internal mechanical)
- Failed boost control solenoid/valve (if used in circuit)
- Restricted or leaking vacuum/boost lines (for vacuum actuators)
- Faulty PCM or poor PCM ground/reference
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power or limp-home mode
- Turbo overboost or underboost conditions
- Poor acceleration and engine response
- Unusual boost pressure readings on scan tool
- Possible abnormal turbo noises if actuator stuck
What to check
- Read and record freeze frame and live data with a scan tool (boost, commanded duty, actual position if available)
- Visual inspection of actuator, connector, wiring harness, and vacuum/boost lines
- Backprobe connector to check reference voltage, signal voltage, and ground with key ON and while commanding actuator
- Measure coil or solenoid resistance and compare to service data (or typical expected range)
- Wiggle test wiring while observing live data for intermittent changes
- Command actuator or control solenoid with a scan tool and observe movement or change in boost
Signal parameters
- Reference supply: typically 5V or battery voltage depending on actuator type — consult service data
- Control: PCM may use PWM (duty cycle 0–100%) to control solenoid/actuator
- Typical solenoid coil resistance (vehicle-dependent): approximately 10–50 ohms (consult service manual)
- Position sensor output (if fitted): about 0.5–4.5 V across travel — verify with manufacturer specs
- When commanded ON, expect a measurable change in duty cycle/voltage and corresponding actuator movement
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data. Note related turbo, MAP, or boost sensor codes.
- Visually inspect actuator, connector, wiring, and any vacuum/boost hoses for damage or disconnection.
- With ignition ON (engine off), backprobe the actuator connector and verify reference voltage, ground, and signal. Compare to expected values in service information.
- Measure resistance of the actuator/solenoid coil. If open or significantly out of range, replace actuator/solenoid.
- Use a scan tool to command the actuator or boost control solenoid while observing live boost and signal/duty values. Confirm actuator moves or solenoid responds.
- Perform continuity checks from actuator connector to PCM pins; check for shorts to battery and ground.
- If actuator is vacuum-operated, check vacuum supply and operation of any control valves; verify the wastegate linkage moves freely and is not seized or obstructed.
- Repair any wiring/connectors or replace faulty actuator/solenoid. Clear codes and road-test to confirm proper boost control and no return of the code.
- If wiring and actuator test good but code persists, consider PCM diagnostics or replacement only after confirming inputs/outputs at the PCM.
Likely causes
- Damaged connector or wiring to the actuator
- Failed wastegate actuator or control solenoid
- Corroded or loose connector pins
- Vacuum/boost hose leak (if actuator is vacuum-operated)
Fault status
Status
P0243 - Turbocharger/Supercharger Wastegate Actuator A Circuit Range/Performance
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours (varies by vehicle and access)
Similar codes
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Code
P0243
HUMMER
P — Powertrain
Turbocharger Wastegate Solenoid 1
Views:
UK: 13
EN: 39
RU: 19
AI status
Completed
Completed
100%
Causes
- Open or short in actuator wiring harness or connector
- Poor connector pin contact, corrosion, or bent pins
- Failed wastegate actuator (electrical or internal mechanical)
- Failed boost control solenoid/valve (if used in circuit)
- Restricted or leaking vacuum/boost lines (for vacuum actuators)
- Faulty PCM or poor PCM ground/reference
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power or limp-home mode
- Turbo overboost or underboost conditions
- Poor acceleration and engine response
- Unusual boost pressure readings on scan tool
- Possible abnormal turbo noises if actuator stuck
What to check
- Read and record freeze frame and live data with a scan tool (boost, commanded duty, actual position if available)
- Visual inspection of actuator, connector, wiring harness, and vacuum/boost lines
- Backprobe connector to check reference voltage, signal voltage, and ground with key ON and while commanding actuator
- Measure coil or solenoid resistance and compare to service data (or typical expected range)
- Wiggle test wiring while observing live data for intermittent changes
- Command actuator or control solenoid with a scan tool and observe movement or change in boost
Signal parameters
- Reference supply: typically 5V or battery voltage depending on actuator type — consult service data
- Control: PCM may use PWM (duty cycle 0–100%) to control solenoid/actuator
- Typical solenoid coil resistance (vehicle-dependent): approximately 10–50 ohms (consult service manual)
- Position sensor output (if fitted): about 0.5–4.5 V across travel — verify with manufacturer specs
- When commanded ON, expect a measurable change in duty cycle/voltage and corresponding actuator movement
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data. Note related turbo, MAP, or boost sensor codes.
- Visually inspect actuator, connector, wiring, and any vacuum/boost hoses for damage or disconnection.
- With ignition ON (engine off), backprobe the actuator connector and verify reference voltage, ground, and signal. Compare to expected values in service information.
- Measure resistance of the actuator/solenoid coil. If open or significantly out of range, replace actuator/solenoid.
- Use a scan tool to command the actuator or boost control solenoid while observing live boost and signal/duty values. Confirm actuator moves or solenoid responds.
- Perform continuity checks from actuator connector to PCM pins; check for shorts to battery and ground.
- If actuator is vacuum-operated, check vacuum supply and operation of any control valves; verify the wastegate linkage moves freely and is not seized or obstructed.
- Repair any wiring/connectors or replace faulty actuator/solenoid. Clear codes and road-test to confirm proper boost control and no return of the code.
- If wiring and actuator test good but code persists, consider PCM diagnostics or replacement only after confirming inputs/outputs at the PCM.
Likely causes
- Damaged connector or wiring to the actuator
- Failed wastegate actuator or control solenoid
- Corroded or loose connector pins
- Vacuum/boost hose leak (if actuator is vacuum-operated)
Fault status
Status
P0243 - Turbocharger/Supercharger Wastegate Actuator A Circuit Range/Performance
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours (varies by vehicle and access)
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Code
P0243
LAND ROVER
P — Powertrain
Variable Oscillator Actuator Circuit
Views:
UK: 9
EN: 20
RU: 12
AI status
Completed
Completed
100%
Causes
- Open or short in actuator wiring harness or connector
- Poor connector pin contact, corrosion, or bent pins
- Failed wastegate actuator (electrical or internal mechanical)
- Failed boost control solenoid/valve (if used in circuit)
- Restricted or leaking vacuum/boost lines (for vacuum actuators)
- Faulty PCM or poor PCM ground/reference
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power or limp-home mode
- Turbo overboost or underboost conditions
- Poor acceleration and engine response
- Unusual boost pressure readings on scan tool
- Possible abnormal turbo noises if actuator stuck
What to check
- Read and record freeze frame and live data with a scan tool (boost, commanded duty, actual position if available)
- Visual inspection of actuator, connector, wiring harness, and vacuum/boost lines
- Backprobe connector to check reference voltage, signal voltage, and ground with key ON and while commanding actuator
- Measure coil or solenoid resistance and compare to service data (or typical expected range)
- Wiggle test wiring while observing live data for intermittent changes
- Command actuator or control solenoid with a scan tool and observe movement or change in boost
Signal parameters
- Reference supply: typically 5V or battery voltage depending on actuator type — consult service data
- Control: PCM may use PWM (duty cycle 0–100%) to control solenoid/actuator
- Typical solenoid coil resistance (vehicle-dependent): approximately 10–50 ohms (consult service manual)
- Position sensor output (if fitted): about 0.5–4.5 V across travel — verify with manufacturer specs
- When commanded ON, expect a measurable change in duty cycle/voltage and corresponding actuator movement
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data. Note related turbo, MAP, or boost sensor codes.
- Visually inspect actuator, connector, wiring, and any vacuum/boost hoses for damage or disconnection.
- With ignition ON (engine off), backprobe the actuator connector and verify reference voltage, ground, and signal. Compare to expected values in service information.
- Measure resistance of the actuator/solenoid coil. If open or significantly out of range, replace actuator/solenoid.
- Use a scan tool to command the actuator or boost control solenoid while observing live boost and signal/duty values. Confirm actuator moves or solenoid responds.
- Perform continuity checks from actuator connector to PCM pins; check for shorts to battery and ground.
- If actuator is vacuum-operated, check vacuum supply and operation of any control valves; verify the wastegate linkage moves freely and is not seized or obstructed.
- Repair any wiring/connectors or replace faulty actuator/solenoid. Clear codes and road-test to confirm proper boost control and no return of the code.
- If wiring and actuator test good but code persists, consider PCM diagnostics or replacement only after confirming inputs/outputs at the PCM.
Likely causes
- Damaged connector or wiring to the actuator
- Failed wastegate actuator or control solenoid
- Corroded or loose connector pins
- Vacuum/boost hose leak (if actuator is vacuum-operated)
Fault status
Status
P0243 - Turbocharger/Supercharger Wastegate Actuator A Circuit Range/Performance
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours (varies by vehicle and access)
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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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Code
P0243
MITSUBISHI
P — Powertrain
Waste gate solenoid valve
Views:
UK: 11
EN: 26
RU: 13
AI status
Completed
Completed
100%
Causes
- Open or short in actuator wiring harness or connector
- Poor connector pin contact, corrosion, or bent pins
- Failed wastegate actuator (electrical or internal mechanical)
- Failed boost control solenoid/valve (if used in circuit)
- Restricted or leaking vacuum/boost lines (for vacuum actuators)
- Faulty PCM or poor PCM ground/reference
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power or limp-home mode
- Turbo overboost or underboost conditions
- Poor acceleration and engine response
- Unusual boost pressure readings on scan tool
- Possible abnormal turbo noises if actuator stuck
What to check
- Read and record freeze frame and live data with a scan tool (boost, commanded duty, actual position if available)
- Visual inspection of actuator, connector, wiring harness, and vacuum/boost lines
- Backprobe connector to check reference voltage, signal voltage, and ground with key ON and while commanding actuator
- Measure coil or solenoid resistance and compare to service data (or typical expected range)
- Wiggle test wiring while observing live data for intermittent changes
- Command actuator or control solenoid with a scan tool and observe movement or change in boost
Signal parameters
- Reference supply: typically 5V or battery voltage depending on actuator type — consult service data
- Control: PCM may use PWM (duty cycle 0–100%) to control solenoid/actuator
- Typical solenoid coil resistance (vehicle-dependent): approximately 10–50 ohms (consult service manual)
- Position sensor output (if fitted): about 0.5–4.5 V across travel — verify with manufacturer specs
- When commanded ON, expect a measurable change in duty cycle/voltage and corresponding actuator movement
Diagnostic algorithm
- Retrieve all stored codes and freeze frame data. Note related turbo, MAP, or boost sensor codes.
- Visually inspect actuator, connector, wiring, and any vacuum/boost hoses for damage or disconnection.
- With ignition ON (engine off), backprobe the actuator connector and verify reference voltage, ground, and signal. Compare to expected values in service information.
- Measure resistance of the actuator/solenoid coil. If open or significantly out of range, replace actuator/solenoid.
- Use a scan tool to command the actuator or boost control solenoid while observing live boost and signal/duty values. Confirm actuator moves or solenoid responds.
- Perform continuity checks from actuator connector to PCM pins; check for shorts to battery and ground.
- If actuator is vacuum-operated, check vacuum supply and operation of any control valves; verify the wastegate linkage moves freely and is not seized or obstructed.
- Repair any wiring/connectors or replace faulty actuator/solenoid. Clear codes and road-test to confirm proper boost control and no return of the code.
- If wiring and actuator test good but code persists, consider PCM diagnostics or replacement only after confirming inputs/outputs at the PCM.
Likely causes
- Damaged connector or wiring to the actuator
- Failed wastegate actuator or control solenoid
- Corroded or loose connector pins
- Vacuum/boost hose leak (if actuator is vacuum-operated)
Fault status
Status
P0243 - Turbocharger/Supercharger Wastegate Actuator A Circuit Range/Performance
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours (varies by vehicle and access)
Similar codes
Your experience will help others
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Was this AI description helpful?
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👍 Like
0
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0
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