Code
P0701
Generic
P — Powertrain
Transmission Control System Range/Performance
Views:
UK: 23
EN: 35
RU: 26
AI status
Completed
Completed
100%
Causes
- Faulty transmission range/selector switch (PRNDL) or sensor
- Intermittent/shorted/open wiring or poor ground to TCM or transmission sensors
- Faulty input (turbine) or output speed sensor
- Faulty shift solenoid(s) or solenoid harness/connectors
- Low, contaminated, or incorrect transmission fluid level/condition
- Internal mechanical wear: clutch packs, bands, or planetary gear damage
Symptoms
- MIL/Check Engine lamp illuminated
- Erratic shifting, failure to engage specified gear or stuck in one gear
- Transmission may go to limp-in/safe mode
- Incorrect engine RPM for road speed (slipping or no shift)
- Harsh or delayed shifts, slipping under load
- Stored transmission-related codes in addition to P0701
What to check
- Read and record all stored DTCs and freeze frame data with a capable scan tool
- Check transmission fluid level, color and smell (burnt odor, dark color)
- Visually inspect wiring and connectors at TCM and transmission for damage, corrosion or poor mating
- Monitor live data: PRNDL/range sensor states, commanded gear vs actual gear, input and output speed sensor readings
- Perform basic electrical checks: continuity, resistance and reference voltage to sensors and switches
- Road test with scan tool to observe gear selection, gear ratio values, and whether fault reappears
Signal parameters
- Transmission range (PRNDL) switch/sensor — discrete or voltage outputs corresponding to selector positions (expected logical states per gear)
- Input (turbine) speed sensor — pulse/frequency or voltage signal proportional to engine/transmission input speed
- Output (vehicle) speed sensor — pulse/frequency or voltage signal proportional to output shaft speed
- Commanded gear vs actual gear ratio — TCM compares expected ratio to computed ratio from input/output speeds
- Shift solenoid command (on/off or PWM) and measured current or response
Diagnostic algorithm
- Connect a scan tool, read all codes and freeze frame data; note associated transmission codes and conditions when code set.
- Inspect transmission fluid level and condition; correct level and change if contaminated or burnt odor present.
- Visually inspect connectors and wiring between the gear selector, transmission sensors, solenoids and TCM; repair any damage or corrosion.
- With key on/engine off, verify PRNDL/range sensor outputs correspond to the physical selector position using a lab scope or multimeter; compare to service manual expected states.
- Start engine and monitor live data: confirm input and output speed sensors produce pulses and that calculated gear ratio matches commanded gear. Note any implausible or missing signals.
- Test shift solenoids for proper resistance, activation and response (apply current or use bi-directional control if supported by scan tool); swap or bench-test suspect solenoids if applicable.
- Backprobe sensor and solenoid circuits while commanding changes to confirm wiring integrity, reference voltage, grounds and absence of shorts to voltage or ground.
- If electrical and sensor checks are good, perform mechanical checks: line pressure test, clutch/band wear inspection, and, if required, remove valve body for further diagnosis per service manual.
- Check TCM for stored adaptive values and perform relearn or TCM programming update if directed by manufacturer procedures.
- Clear codes and re-run road test to verify repair and that P0701 does not return.
Likely causes
- PRNDL switch not matching gear selector position
- Intermittent connector or wiring fault between transmission and TCM
- Input or output speed sensor giving implausible signals to TCM
- Shift solenoid sticking or not commanding correctly
- Low fluid level causing slipping or wrong gear engage
Fault status
Status
P0701 indicates the TCM has detected that the transmission range selection or measured gear performance does not match expected values. It requires electrical, sensor and mechanical verification to determine the underlying cause.
Repair difficulty: Medium
Diagnostic time: 1.5-4.0 hours
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Code
P0701
GWM
P — Powertrain
- The transmission control system is incorrectly adjusted
Views:
UK: 4
EN: 6
RU: 5
AI status
Completed
Completed
100%
Causes
- Faulty transmission range/selector switch (PRNDL) or sensor
- Intermittent/shorted/open wiring or poor ground to TCM or transmission sensors
- Faulty input (turbine) or output speed sensor
- Faulty shift solenoid(s) or solenoid harness/connectors
- Low, contaminated, or incorrect transmission fluid level/condition
- Internal mechanical wear: clutch packs, bands, or planetary gear damage
Symptoms
- MIL/Check Engine lamp illuminated
- Erratic shifting, failure to engage specified gear or stuck in one gear
- Transmission may go to limp-in/safe mode
- Incorrect engine RPM for road speed (slipping or no shift)
- Harsh or delayed shifts, slipping under load
- Stored transmission-related codes in addition to P0701
What to check
- Read and record all stored DTCs and freeze frame data with a capable scan tool
- Check transmission fluid level, color and smell (burnt odor, dark color)
- Visually inspect wiring and connectors at TCM and transmission for damage, corrosion or poor mating
- Monitor live data: PRNDL/range sensor states, commanded gear vs actual gear, input and output speed sensor readings
- Perform basic electrical checks: continuity, resistance and reference voltage to sensors and switches
- Road test with scan tool to observe gear selection, gear ratio values, and whether fault reappears
Signal parameters
- Transmission range (PRNDL) switch/sensor — discrete or voltage outputs corresponding to selector positions (expected logical states per gear)
- Input (turbine) speed sensor — pulse/frequency or voltage signal proportional to engine/transmission input speed
- Output (vehicle) speed sensor — pulse/frequency or voltage signal proportional to output shaft speed
- Commanded gear vs actual gear ratio — TCM compares expected ratio to computed ratio from input/output speeds
- Shift solenoid command (on/off or PWM) and measured current or response
Diagnostic algorithm
- Connect a scan tool, read all codes and freeze frame data; note associated transmission codes and conditions when code set.
- Inspect transmission fluid level and condition; correct level and change if contaminated or burnt odor present.
- Visually inspect connectors and wiring between the gear selector, transmission sensors, solenoids and TCM; repair any damage or corrosion.
- With key on/engine off, verify PRNDL/range sensor outputs correspond to the physical selector position using a lab scope or multimeter; compare to service manual expected states.
- Start engine and monitor live data: confirm input and output speed sensors produce pulses and that calculated gear ratio matches commanded gear. Note any implausible or missing signals.
- Test shift solenoids for proper resistance, activation and response (apply current or use bi-directional control if supported by scan tool); swap or bench-test suspect solenoids if applicable.
- Backprobe sensor and solenoid circuits while commanding changes to confirm wiring integrity, reference voltage, grounds and absence of shorts to voltage or ground.
- If electrical and sensor checks are good, perform mechanical checks: line pressure test, clutch/band wear inspection, and, if required, remove valve body for further diagnosis per service manual.
- Check TCM for stored adaptive values and perform relearn or TCM programming update if directed by manufacturer procedures.
- Clear codes and re-run road test to verify repair and that P0701 does not return.
Likely causes
- PRNDL switch not matching gear selector position
- Intermittent connector or wiring fault between transmission and TCM
- Input or output speed sensor giving implausible signals to TCM
- Shift solenoid sticking or not commanding correctly
- Low fluid level causing slipping or wrong gear engage
Fault status
Status
P0701 indicates the TCM has detected that the transmission range selection or measured gear performance does not match expected values. It requires electrical, sensor and mechanical verification to determine the underlying cause.
Repair difficulty: Medium
Diagnostic time: 1.5-4.0 hours
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Code
P0701
HUMMER
P — Powertrain
Transmission Control System Range/Performance
Views:
UK: 9
EN: 20
RU: 13
AI status
Completed
Completed
100%
Causes
- Faulty transmission range/selector switch (PRNDL) or sensor
- Intermittent/shorted/open wiring or poor ground to TCM or transmission sensors
- Faulty input (turbine) or output speed sensor
- Faulty shift solenoid(s) or solenoid harness/connectors
- Low, contaminated, or incorrect transmission fluid level/condition
- Internal mechanical wear: clutch packs, bands, or planetary gear damage
Symptoms
- MIL/Check Engine lamp illuminated
- Erratic shifting, failure to engage specified gear or stuck in one gear
- Transmission may go to limp-in/safe mode
- Incorrect engine RPM for road speed (slipping or no shift)
- Harsh or delayed shifts, slipping under load
- Stored transmission-related codes in addition to P0701
What to check
- Read and record all stored DTCs and freeze frame data with a capable scan tool
- Check transmission fluid level, color and smell (burnt odor, dark color)
- Visually inspect wiring and connectors at TCM and transmission for damage, corrosion or poor mating
- Monitor live data: PRNDL/range sensor states, commanded gear vs actual gear, input and output speed sensor readings
- Perform basic electrical checks: continuity, resistance and reference voltage to sensors and switches
- Road test with scan tool to observe gear selection, gear ratio values, and whether fault reappears
Signal parameters
- Transmission range (PRNDL) switch/sensor — discrete or voltage outputs corresponding to selector positions (expected logical states per gear)
- Input (turbine) speed sensor — pulse/frequency or voltage signal proportional to engine/transmission input speed
- Output (vehicle) speed sensor — pulse/frequency or voltage signal proportional to output shaft speed
- Commanded gear vs actual gear ratio — TCM compares expected ratio to computed ratio from input/output speeds
- Shift solenoid command (on/off or PWM) and measured current or response
Diagnostic algorithm
- Connect a scan tool, read all codes and freeze frame data; note associated transmission codes and conditions when code set.
- Inspect transmission fluid level and condition; correct level and change if contaminated or burnt odor present.
- Visually inspect connectors and wiring between the gear selector, transmission sensors, solenoids and TCM; repair any damage or corrosion.
- With key on/engine off, verify PRNDL/range sensor outputs correspond to the physical selector position using a lab scope or multimeter; compare to service manual expected states.
- Start engine and monitor live data: confirm input and output speed sensors produce pulses and that calculated gear ratio matches commanded gear. Note any implausible or missing signals.
- Test shift solenoids for proper resistance, activation and response (apply current or use bi-directional control if supported by scan tool); swap or bench-test suspect solenoids if applicable.
- Backprobe sensor and solenoid circuits while commanding changes to confirm wiring integrity, reference voltage, grounds and absence of shorts to voltage or ground.
- If electrical and sensor checks are good, perform mechanical checks: line pressure test, clutch/band wear inspection, and, if required, remove valve body for further diagnosis per service manual.
- Check TCM for stored adaptive values and perform relearn or TCM programming update if directed by manufacturer procedures.
- Clear codes and re-run road test to verify repair and that P0701 does not return.
Likely causes
- PRNDL switch not matching gear selector position
- Intermittent connector or wiring fault between transmission and TCM
- Input or output speed sensor giving implausible signals to TCM
- Shift solenoid sticking or not commanding correctly
- Low fluid level causing slipping or wrong gear engage
Fault status
Status
P0701 indicates the TCM has detected that the transmission range selection or measured gear performance does not match expected values. It requires electrical, sensor and mechanical verification to determine the underlying cause.
Repair difficulty: Medium
Diagnostic time: 1.5-4.0 hours
Similar codes
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Code
P0701
LAND ROVER
P — Powertrain
Combination of impossible substitute functions
Views:
UK: 10
EN: 17
RU: 10
AI status
Completed
Completed
100%
Causes
- Faulty transmission range/selector switch (PRNDL) or sensor
- Intermittent/shorted/open wiring or poor ground to TCM or transmission sensors
- Faulty input (turbine) or output speed sensor
- Faulty shift solenoid(s) or solenoid harness/connectors
- Low, contaminated, or incorrect transmission fluid level/condition
- Internal mechanical wear: clutch packs, bands, or planetary gear damage
Symptoms
- MIL/Check Engine lamp illuminated
- Erratic shifting, failure to engage specified gear or stuck in one gear
- Transmission may go to limp-in/safe mode
- Incorrect engine RPM for road speed (slipping or no shift)
- Harsh or delayed shifts, slipping under load
- Stored transmission-related codes in addition to P0701
What to check
- Read and record all stored DTCs and freeze frame data with a capable scan tool
- Check transmission fluid level, color and smell (burnt odor, dark color)
- Visually inspect wiring and connectors at TCM and transmission for damage, corrosion or poor mating
- Monitor live data: PRNDL/range sensor states, commanded gear vs actual gear, input and output speed sensor readings
- Perform basic electrical checks: continuity, resistance and reference voltage to sensors and switches
- Road test with scan tool to observe gear selection, gear ratio values, and whether fault reappears
Signal parameters
- Transmission range (PRNDL) switch/sensor — discrete or voltage outputs corresponding to selector positions (expected logical states per gear)
- Input (turbine) speed sensor — pulse/frequency or voltage signal proportional to engine/transmission input speed
- Output (vehicle) speed sensor — pulse/frequency or voltage signal proportional to output shaft speed
- Commanded gear vs actual gear ratio — TCM compares expected ratio to computed ratio from input/output speeds
- Shift solenoid command (on/off or PWM) and measured current or response
Diagnostic algorithm
- Connect a scan tool, read all codes and freeze frame data; note associated transmission codes and conditions when code set.
- Inspect transmission fluid level and condition; correct level and change if contaminated or burnt odor present.
- Visually inspect connectors and wiring between the gear selector, transmission sensors, solenoids and TCM; repair any damage or corrosion.
- With key on/engine off, verify PRNDL/range sensor outputs correspond to the physical selector position using a lab scope or multimeter; compare to service manual expected states.
- Start engine and monitor live data: confirm input and output speed sensors produce pulses and that calculated gear ratio matches commanded gear. Note any implausible or missing signals.
- Test shift solenoids for proper resistance, activation and response (apply current or use bi-directional control if supported by scan tool); swap or bench-test suspect solenoids if applicable.
- Backprobe sensor and solenoid circuits while commanding changes to confirm wiring integrity, reference voltage, grounds and absence of shorts to voltage or ground.
- If electrical and sensor checks are good, perform mechanical checks: line pressure test, clutch/band wear inspection, and, if required, remove valve body for further diagnosis per service manual.
- Check TCM for stored adaptive values and perform relearn or TCM programming update if directed by manufacturer procedures.
- Clear codes and re-run road test to verify repair and that P0701 does not return.
Likely causes
- PRNDL switch not matching gear selector position
- Intermittent connector or wiring fault between transmission and TCM
- Input or output speed sensor giving implausible signals to TCM
- Shift solenoid sticking or not commanding correctly
- Low fluid level causing slipping or wrong gear engage
Fault status
Status
P0701 indicates the TCM has detected that the transmission range selection or measured gear performance does not match expected values. It requires electrical, sensor and mechanical verification to determine the underlying cause.
Repair difficulty: Medium
Diagnostic time: 1.5-4.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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Send to email
Code
P0701
MERCEDES-BENZ
P — Powertrain
Transmission Control System Range/Performance
Views:
UK: 18
EN: 29
RU: 16
AI status
Completed
Completed
100%
Causes
- Faulty transmission range/selector switch (PRNDL) or sensor
- Intermittent/shorted/open wiring or poor ground to TCM or transmission sensors
- Faulty input (turbine) or output speed sensor
- Faulty shift solenoid(s) or solenoid harness/connectors
- Low, contaminated, or incorrect transmission fluid level/condition
- Internal mechanical wear: clutch packs, bands, or planetary gear damage
Symptoms
- MIL/Check Engine lamp illuminated
- Erratic shifting, failure to engage specified gear or stuck in one gear
- Transmission may go to limp-in/safe mode
- Incorrect engine RPM for road speed (slipping or no shift)
- Harsh or delayed shifts, slipping under load
- Stored transmission-related codes in addition to P0701
What to check
- Read and record all stored DTCs and freeze frame data with a capable scan tool
- Check transmission fluid level, color and smell (burnt odor, dark color)
- Visually inspect wiring and connectors at TCM and transmission for damage, corrosion or poor mating
- Monitor live data: PRNDL/range sensor states, commanded gear vs actual gear, input and output speed sensor readings
- Perform basic electrical checks: continuity, resistance and reference voltage to sensors and switches
- Road test with scan tool to observe gear selection, gear ratio values, and whether fault reappears
Signal parameters
- Transmission range (PRNDL) switch/sensor — discrete or voltage outputs corresponding to selector positions (expected logical states per gear)
- Input (turbine) speed sensor — pulse/frequency or voltage signal proportional to engine/transmission input speed
- Output (vehicle) speed sensor — pulse/frequency or voltage signal proportional to output shaft speed
- Commanded gear vs actual gear ratio — TCM compares expected ratio to computed ratio from input/output speeds
- Shift solenoid command (on/off or PWM) and measured current or response
Diagnostic algorithm
- Connect a scan tool, read all codes and freeze frame data; note associated transmission codes and conditions when code set.
- Inspect transmission fluid level and condition; correct level and change if contaminated or burnt odor present.
- Visually inspect connectors and wiring between the gear selector, transmission sensors, solenoids and TCM; repair any damage or corrosion.
- With key on/engine off, verify PRNDL/range sensor outputs correspond to the physical selector position using a lab scope or multimeter; compare to service manual expected states.
- Start engine and monitor live data: confirm input and output speed sensors produce pulses and that calculated gear ratio matches commanded gear. Note any implausible or missing signals.
- Test shift solenoids for proper resistance, activation and response (apply current or use bi-directional control if supported by scan tool); swap or bench-test suspect solenoids if applicable.
- Backprobe sensor and solenoid circuits while commanding changes to confirm wiring integrity, reference voltage, grounds and absence of shorts to voltage or ground.
- If electrical and sensor checks are good, perform mechanical checks: line pressure test, clutch/band wear inspection, and, if required, remove valve body for further diagnosis per service manual.
- Check TCM for stored adaptive values and perform relearn or TCM programming update if directed by manufacturer procedures.
- Clear codes and re-run road test to verify repair and that P0701 does not return.
Likely causes
- PRNDL switch not matching gear selector position
- Intermittent connector or wiring fault between transmission and TCM
- Input or output speed sensor giving implausible signals to TCM
- Shift solenoid sticking or not commanding correctly
- Low fluid level causing slipping or wrong gear engage
Fault status
Status
P0701 indicates the TCM has detected that the transmission range selection or measured gear performance does not match expected values. It requires electrical, sensor and mechanical verification to determine the underlying cause.
Repair difficulty: Medium
Diagnostic time: 1.5-4.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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0
Send to email