Code
P0244
Generic
P — Powertrain
Turbocharger/Supercharger Wastegate Actuator A Range/Performance
Views:
UK: 21
EN: 23
RU: 38
AI status
Completed
Completed
100%
Causes
- Faulty wastegate actuator (electronic or vacuum) or internal position sensor
- Sticking or seized wastegate linkage or pivot
- Damaged or disconnected wiring, poor connector, or corrosion at actuator connector
- Failed boost control solenoid or PWM driver circuit
- Boost/vacuum leak or blocked vacuum line (for vacuum actuators)
- Turbocharger internal damage or mechanical binding
Symptoms
- Check Engine Light (MIL) illuminated
- Loss of boost or reduced engine power (turbo underboost)
- Poor acceleration, hesitation or limp-home mode
- Unusual turbo noises or rattling if mechanical damage present
- Erratic boost behavior (surging) or inability to control boost
What to check
- Read freeze frame and live data with a scan tool: commanded vs actual actuator position and boost pressure
- Visual inspection of actuator, linkage, vacuum hoses (if used) and connectors for damage or disconnection
- Backprobe actuator sensor signal and ground while commanding actuator with scan tool
- Check for stored related codes (boost sensor, solenoid circuits, turbo DTCs)
- Perform a smoke or pressure test of boost/vacuum system for leaks
- Manually operate wastegate actuator (apply vacuum or use hand tool) to verify linkage free movement
Signal parameters
- Actuator position sensor (feedback) typically 0.5–4.5 V proportional to position (manufacturer-specific)
- Difference between commanded and actual position usually must be within ~10–15% (vehicle-specific)
- Boost control solenoid PWM duty: 0–100% at frequencies commonly 20–200 Hz (spec varies by vehicle)
- Actuator coil resistance (if electric) — check service spec; open or short indicates failure
- Vacuum actuators should hold vacuum; acceptable leak rate depends on vehicle
Diagnostic algorithm
- Retrieve DTC(s) and freeze-frame; note conditions when fault occurred (RPM, load, temperature, boost).
- Inspect actuator, linkage and mounting for physical damage, binding, corrosion or disconnected rods.
- Inspect wiring and connector for corrosion, bent pins, damaged insulation and secure connections.
- With a scan tool, monitor commanded actuator position and actual feedback while commanding actuator through tests. Note large discrepancies or no movement.
- Backprobe the actuator feedback circuit: verify reference voltage, signal voltage and ground continuity to ECM. Compare to expected values.
- If actuator uses vacuum/pressure, apply hand vacuum/gauge and verify actuator movement and leakdown. Perform smoke test on boost/vacuum plumbing.
- Command the boost control solenoid with a scan tool and verify it switches (measure PWM/duty and voltage). Check solenoid resistance and wiring.
- Manually operate wastegate (if safe and accessible) to confirm mechanical freedom; remove turbo inlet if needed to inspect actuator linkage travel.
- If wiring and external components test good but feedback still out of range, evaluate actuator internal sensor; replace actuator and retest.
- After repairs, clear codes and perform road/boost test under similar conditions to verify proper operation; confirm no return of P0244 or related codes.
Likely causes
- Actuator position sensor producing voltage out of 0.5–4.5 V range or no signal
- Actuator unable to reach commanded position because of seized linkage or broken rod
- Open/short in actuator harness or intermittent connector contact
- Control solenoid not modulating duty cycle (stuck open/closed) or wiring fault
- Large boost leak causing feedback to never reach commanded position
- Damaged turbo wastegate arm/rod or broken flange/pivot
Fault status
Status
Turbocharger/Supercharger Wastegate Actuator 'A' position/range/performance fault — actuator feedback out of expected range or not following commanded position.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P0244
GWM
P — Powertrain
- Invalid indicator / turbocharger solenoid A not adjusted
Views:
UK: 8
EN: 10
RU: 14
AI status
Completed
Completed
100%
Causes
- Faulty wastegate actuator (electronic or vacuum) or internal position sensor
- Sticking or seized wastegate linkage or pivot
- Damaged or disconnected wiring, poor connector, or corrosion at actuator connector
- Failed boost control solenoid or PWM driver circuit
- Boost/vacuum leak or blocked vacuum line (for vacuum actuators)
- Turbocharger internal damage or mechanical binding
Symptoms
- Check Engine Light (MIL) illuminated
- Loss of boost or reduced engine power (turbo underboost)
- Poor acceleration, hesitation or limp-home mode
- Unusual turbo noises or rattling if mechanical damage present
- Erratic boost behavior (surging) or inability to control boost
What to check
- Read freeze frame and live data with a scan tool: commanded vs actual actuator position and boost pressure
- Visual inspection of actuator, linkage, vacuum hoses (if used) and connectors for damage or disconnection
- Backprobe actuator sensor signal and ground while commanding actuator with scan tool
- Check for stored related codes (boost sensor, solenoid circuits, turbo DTCs)
- Perform a smoke or pressure test of boost/vacuum system for leaks
- Manually operate wastegate actuator (apply vacuum or use hand tool) to verify linkage free movement
Signal parameters
- Actuator position sensor (feedback) typically 0.5–4.5 V proportional to position (manufacturer-specific)
- Difference between commanded and actual position usually must be within ~10–15% (vehicle-specific)
- Boost control solenoid PWM duty: 0–100% at frequencies commonly 20–200 Hz (spec varies by vehicle)
- Actuator coil resistance (if electric) — check service spec; open or short indicates failure
- Vacuum actuators should hold vacuum; acceptable leak rate depends on vehicle
Diagnostic algorithm
- Retrieve DTC(s) and freeze-frame; note conditions when fault occurred (RPM, load, temperature, boost).
- Inspect actuator, linkage and mounting for physical damage, binding, corrosion or disconnected rods.
- Inspect wiring and connector for corrosion, bent pins, damaged insulation and secure connections.
- With a scan tool, monitor commanded actuator position and actual feedback while commanding actuator through tests. Note large discrepancies or no movement.
- Backprobe the actuator feedback circuit: verify reference voltage, signal voltage and ground continuity to ECM. Compare to expected values.
- If actuator uses vacuum/pressure, apply hand vacuum/gauge and verify actuator movement and leakdown. Perform smoke test on boost/vacuum plumbing.
- Command the boost control solenoid with a scan tool and verify it switches (measure PWM/duty and voltage). Check solenoid resistance and wiring.
- Manually operate wastegate (if safe and accessible) to confirm mechanical freedom; remove turbo inlet if needed to inspect actuator linkage travel.
- If wiring and external components test good but feedback still out of range, evaluate actuator internal sensor; replace actuator and retest.
- After repairs, clear codes and perform road/boost test under similar conditions to verify proper operation; confirm no return of P0244 or related codes.
Likely causes
- Actuator position sensor producing voltage out of 0.5–4.5 V range or no signal
- Actuator unable to reach commanded position because of seized linkage or broken rod
- Open/short in actuator harness or intermittent connector contact
- Control solenoid not modulating duty cycle (stuck open/closed) or wiring fault
- Large boost leak causing feedback to never reach commanded position
- Damaged turbo wastegate arm/rod or broken flange/pivot
Fault status
Status
Turbocharger/Supercharger Wastegate Actuator 'A' position/range/performance fault — actuator feedback out of expected range or not following commanded position.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Similar codes
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Code
P0244
HUMMER
P — Powertrain
Turbocharger Wastegate Solenoid 1 Performance
Views:
UK: 11
EN: 17
RU: 34
AI status
Completed
Completed
100%
Causes
- Faulty wastegate actuator (electronic or vacuum) or internal position sensor
- Sticking or seized wastegate linkage or pivot
- Damaged or disconnected wiring, poor connector, or corrosion at actuator connector
- Failed boost control solenoid or PWM driver circuit
- Boost/vacuum leak or blocked vacuum line (for vacuum actuators)
- Turbocharger internal damage or mechanical binding
Symptoms
- Check Engine Light (MIL) illuminated
- Loss of boost or reduced engine power (turbo underboost)
- Poor acceleration, hesitation or limp-home mode
- Unusual turbo noises or rattling if mechanical damage present
- Erratic boost behavior (surging) or inability to control boost
What to check
- Read freeze frame and live data with a scan tool: commanded vs actual actuator position and boost pressure
- Visual inspection of actuator, linkage, vacuum hoses (if used) and connectors for damage or disconnection
- Backprobe actuator sensor signal and ground while commanding actuator with scan tool
- Check for stored related codes (boost sensor, solenoid circuits, turbo DTCs)
- Perform a smoke or pressure test of boost/vacuum system for leaks
- Manually operate wastegate actuator (apply vacuum or use hand tool) to verify linkage free movement
Signal parameters
- Actuator position sensor (feedback) typically 0.5–4.5 V proportional to position (manufacturer-specific)
- Difference between commanded and actual position usually must be within ~10–15% (vehicle-specific)
- Boost control solenoid PWM duty: 0–100% at frequencies commonly 20–200 Hz (spec varies by vehicle)
- Actuator coil resistance (if electric) — check service spec; open or short indicates failure
- Vacuum actuators should hold vacuum; acceptable leak rate depends on vehicle
Diagnostic algorithm
- Retrieve DTC(s) and freeze-frame; note conditions when fault occurred (RPM, load, temperature, boost).
- Inspect actuator, linkage and mounting for physical damage, binding, corrosion or disconnected rods.
- Inspect wiring and connector for corrosion, bent pins, damaged insulation and secure connections.
- With a scan tool, monitor commanded actuator position and actual feedback while commanding actuator through tests. Note large discrepancies or no movement.
- Backprobe the actuator feedback circuit: verify reference voltage, signal voltage and ground continuity to ECM. Compare to expected values.
- If actuator uses vacuum/pressure, apply hand vacuum/gauge and verify actuator movement and leakdown. Perform smoke test on boost/vacuum plumbing.
- Command the boost control solenoid with a scan tool and verify it switches (measure PWM/duty and voltage). Check solenoid resistance and wiring.
- Manually operate wastegate (if safe and accessible) to confirm mechanical freedom; remove turbo inlet if needed to inspect actuator linkage travel.
- If wiring and external components test good but feedback still out of range, evaluate actuator internal sensor; replace actuator and retest.
- After repairs, clear codes and perform road/boost test under similar conditions to verify proper operation; confirm no return of P0244 or related codes.
Likely causes
- Actuator position sensor producing voltage out of 0.5–4.5 V range or no signal
- Actuator unable to reach commanded position because of seized linkage or broken rod
- Open/short in actuator harness or intermittent connector contact
- Control solenoid not modulating duty cycle (stuck open/closed) or wiring fault
- Large boost leak causing feedback to never reach commanded position
- Damaged turbo wastegate arm/rod or broken flange/pivot
Fault status
Status
Turbocharger/Supercharger Wastegate Actuator 'A' position/range/performance fault — actuator feedback out of expected range or not following commanded position.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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