Code
P1757
CHRYSLER
P — Powertrain
Governor Pressure Above 3 PSI When Request Is 0 PSI
Views:
UK: 20
EN: 31
RU: 26
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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Code
P1757
DAEWOO
P — Powertrain
2 shift pos. indic. lamp
Views:
UK: 2
EN: 2
RU: 2
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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Code
P1757
DODGE
P — Powertrain
Governor Pressure Above 3 PSI When Request Is 0 PSI
Views:
UK: 18
EN: 42
RU: 25
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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Code
P1757
JEEP
P — Powertrain
Governor Pressure Above 3 PSI When Request Is 0 PSI
Views:
UK: 18
EN: 38
RU: 24
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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Code
P1757
MAZDA
P — Powertrain
Transmission Shift Solenoid B Circuit Shorted
Views:
UK: 19
EN: 36
RU: 26
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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Code
P1757
PLYMOUTH
P — Powertrain
Governor Pressure Above 3 PSI When Request Is 0 PSI
Views:
UK: 21
EN: 33
RU: 26
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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Code
P1757
PONTIAC
P — Powertrain
Governor Pressure Above 3 PSI When Request Is 0 PSI
Views:
UK: 20
EN: 33
RU: 24
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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Code
P1757
RAM
P — Powertrain
Governor pressure is above 3 PSI when 0 PSI is requested
Views:
UK: 1
EN: 2
RU: 3
AI status
Completed
Completed
100%
Causes
- Internal transmission hydraulic leakage or spring failure (stuck/open valve)
- Blocked or contaminated valve body or governor passages
- Faulty governor pressure sensor/switch or incorrect sensor signal
- Pressure control solenoid stuck, leaking, or mechanically jammed
- Wiring harness or connector fault (open, short, corrosion) between sensor/solenoid and TCM
- Low, degraded, or incorrect transmission fluid
Symptoms
- Check Engine/Transmission warning lamp illuminated
- Transmission may shift harshly, slip, or go into limp mode
- Erratic or delayed upshifts and downshifts
- Incorrect gear selection or inability to shift into all gears
- Possible transmission noise or fluid leaks
- Reduced drivability and performance
What to check
- Read and record freeze frame and all transmission-related codes with a scan tool
- Monitor live data PIDs: governor pressure, requested pressure, pressure control solenoid duty cycles, and gear/shift status
- Visually inspect transmission fluid level and condition (color, smell, contamination)
- Inspect wiring and connectors at governor pressure sensor/switch, pressure control solenoids, and TCM for damage or corrosion
- Check for TSBs or software updates for the vehicle/TCM
Signal parameters
- Governor pressure PID should read approximately 0 psi (near zero) when TCM requested pressure = 0 psi; code trips when measured > ~3 psi
- Pressure sensor output is typically an analog voltage proportional to pressure (0–5 V scale) — sensor voltage should be at the low end when request = 0
- TCM requested pressure PID should report 0 psi (or 0%) when idle/neutral condition expected
- Pressure control solenoid duty cycle should be 0% (off) when request = 0; solenoid resistance should match factory spec (consult service manual)
- Compare actual hydraulic pressure measured with a mechanical gauge to the governor pressure PID to confirm discrepancy
Diagnostic algorithm
- Retrieve stored codes and freeze-frame data; note conditions when code set.
- Clear codes and perform a controlled road or stall test while monitoring live PIDs: governor pressure, requested pressure, solenoid duty, gear selection.
- Visually inspect connectors and wiring for the governor pressure sensor/switch and pressure control solenoids; repair any damaged wiring or poor connections.
- Check transmission fluid level and condition; if low or degraded, correct level and replace fluid/filter then retest.
- With a scan tool, confirm TCM requests 0 psi while measured governor pressure is high. If so, backprobe sensor connector and measure sensor voltage with ignition on; verify it follows pressure PID behavior.
- Install a mechanical pressure gauge at the governor/regulated pressure test port (per service manual) and compare to scan-tool PID. If mechanical gauge also shows elevated pressure, suspect hydraulic/mechanical fault.
- If mechanical pressure is correct but PID is high, suspect sensor or wiring; check sensor resistance (if applicable) and replace sensor/switch if out of spec.
- If mechanical pressure is high, inspect valve body, pressure regulator/governor valve and pressure control solenoids for sticking or internal leakage; clean or repair valve body as needed.
- If wiring, sensor, and valve body check good but problem persists, consider TCM fault or software; perform TCM reflash or replacement only after verifying all other items.
- After repairs, clear codes and perform road test to confirm code does not return.
Likely causes
- Faulty governor pressure sensor/switch or its connector
- Stuck or leaking pressure control/gov valve in valve body
- Contaminated transmission fluid or clogged valve body passages
- Wiring harness damage or poor connection to pressure sensor/solenoid
- Faulty pressure control solenoid
Fault status
Status
Governor pressure above 3 PSI when TCM request is 0 PSI — indicates unexpected hydraulic pressure or incorrect pressure signal to the transmission control module.
Repair difficulty: Hard
Diagnostic time: 1.5 - 4.0 hours
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