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Home / DTC / P0707 — Transmission Range Sensor A Circuit Low

P0707 — Transmission Range Sensor A Circuit Low

Detailed page for trouble code P0707.

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22,491specific
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Code

P0707

Generic P — Powertrain

Transmission Range Sensor A Circuit Low

Brand: Generic
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground in TR sensor A wiring
  • Open or high-resistance wiring/connectors between sensor and PCM
  • Corroded, loose, or damaged connector at the sensor or PCM
  • Faulty transmission range (park/neutral) position sensor or switch
  • Poor ground or lost reference voltage from PCM
  • Incorrectly adjusted or mechanically damaged shift selector

Symptoms

  • Check Engine Light (MIL) illuminated and DTC P0707 stored
  • Gear indicator may show incorrect position or be erratic
  • Engine may not crank (starter inhibited) because PCM thinks vehicle not in Park/Neutral
  • Transmission may enter limp/ failsafe mode or exhibit abnormal shifting
  • Intermittent loss of gear selection detection

What to check

  • Scan for stored/related DTCs and review freeze-frame/live data (PRNDL status, sensor voltage)
  • Visual inspection of the range sensor connector and wiring for corrosion, damage, or pin pushed out
  • Backprobe sensor signal, reference, and ground circuits with key ON (engine OFF) and observe voltages
  • Check continuity and resistance between sensor terminals and PCM connector pins
  • Verify PCM provides the expected reference voltage (typically ~5 V) and a good ground
  • Wiggle test wiring while monitoring signal for intermittent faults

Signal parameters

  • Reference voltage: typically ~5.0 V from PCM to range sensor (key ON, engine OFF)
  • Signal voltage: varies by gear; a 'low' fault is usually detected when signal is below ~0.3–0.5 V (vehicle-dependent)
  • Open circuit: very high resistance or infinite between sensor signal and PCM
  • Short to ground: continuity from signal circuit to chassis ground (near 0 Ω)
  • Short to battery: presence of battery voltage on signal when it should be low indicates short/high

Diagnostic algorithm

  1. Retrieve P0707 and any other transmission/PRNDL codes; record freeze frame and live data.
  2. Verify battery voltage is stable; low battery can cause spurious sensor readings.
  3. Perform visual inspection of transmission range sensor connector and harness for damage or corrosion.
  4. Backprobe the sensor with key ON (engine OFF): check reference (~5V), signal voltage, and ground. Note values in each gear position while moving shifter through PRNDL.
  5. If reference or ground is missing, trace wiring back to PCM and repair the supply/ground circuit (check fuses/relays as applicable).
  6. If reference and ground are present but signal is low, disconnect the sensor and measure signal circuit to chassis ground and to PCM: check for short to ground or open circuit.
  7. Perform continuity/resistance check between sensor connector pin and PCM pin. Repair any opens/shorts found in harness or connector.
  8. If wiring and connectors test good, replace the transmission range sensor/switch, then clear codes.
  9. Test drive and re-check live data and DTC status. If fault persists after sensor replacement and wiring repairs, consider PCM diagnosis or replacement.
  10. After repair, verify proper gear selection indication and starter enable/disable function as applicable.

Likely causes

  • Water-corroded connector at the transmission range sensor causing low signal
  • Wiring chafed and shorted to chassis ground
  • Broken or intermittent wires in the harness between the sensor and PCM
  • Failed TR sensor/switch stuck in low-output state
  • Missing/weak 5V reference or ground at the sensor

Fault status

⚠️ Status
Transmission Range Sensor A Circuit Low — PCM detected a low-voltage/ground condition on the Transmission Range (PRNDL) Sensor A circuit. Inspect wiring, connector, sensor, and related reference/ground circuits.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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Code

P0707

GWM P — Powertrain

- Low Transmission Sensor

Brand: GWM
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground in TR sensor A wiring
  • Open or high-resistance wiring/connectors between sensor and PCM
  • Corroded, loose, or damaged connector at the sensor or PCM
  • Faulty transmission range (park/neutral) position sensor or switch
  • Poor ground or lost reference voltage from PCM
  • Incorrectly adjusted or mechanically damaged shift selector

Symptoms

  • Check Engine Light (MIL) illuminated and DTC P0707 stored
  • Gear indicator may show incorrect position or be erratic
  • Engine may not crank (starter inhibited) because PCM thinks vehicle not in Park/Neutral
  • Transmission may enter limp/ failsafe mode or exhibit abnormal shifting
  • Intermittent loss of gear selection detection

What to check

  • Scan for stored/related DTCs and review freeze-frame/live data (PRNDL status, sensor voltage)
  • Visual inspection of the range sensor connector and wiring for corrosion, damage, or pin pushed out
  • Backprobe sensor signal, reference, and ground circuits with key ON (engine OFF) and observe voltages
  • Check continuity and resistance between sensor terminals and PCM connector pins
  • Verify PCM provides the expected reference voltage (typically ~5 V) and a good ground
  • Wiggle test wiring while monitoring signal for intermittent faults

Signal parameters

  • Reference voltage: typically ~5.0 V from PCM to range sensor (key ON, engine OFF)
  • Signal voltage: varies by gear; a 'low' fault is usually detected when signal is below ~0.3–0.5 V (vehicle-dependent)
  • Open circuit: very high resistance or infinite between sensor signal and PCM
  • Short to ground: continuity from signal circuit to chassis ground (near 0 Ω)
  • Short to battery: presence of battery voltage on signal when it should be low indicates short/high

Diagnostic algorithm

  1. Retrieve P0707 and any other transmission/PRNDL codes; record freeze frame and live data.
  2. Verify battery voltage is stable; low battery can cause spurious sensor readings.
  3. Perform visual inspection of transmission range sensor connector and harness for damage or corrosion.
  4. Backprobe the sensor with key ON (engine OFF): check reference (~5V), signal voltage, and ground. Note values in each gear position while moving shifter through PRNDL.
  5. If reference or ground is missing, trace wiring back to PCM and repair the supply/ground circuit (check fuses/relays as applicable).
  6. If reference and ground are present but signal is low, disconnect the sensor and measure signal circuit to chassis ground and to PCM: check for short to ground or open circuit.
  7. Perform continuity/resistance check between sensor connector pin and PCM pin. Repair any opens/shorts found in harness or connector.
  8. If wiring and connectors test good, replace the transmission range sensor/switch, then clear codes.
  9. Test drive and re-check live data and DTC status. If fault persists after sensor replacement and wiring repairs, consider PCM diagnosis or replacement.
  10. After repair, verify proper gear selection indication and starter enable/disable function as applicable.

Likely causes

  • Water-corroded connector at the transmission range sensor causing low signal
  • Wiring chafed and shorted to chassis ground
  • Broken or intermittent wires in the harness between the sensor and PCM
  • Failed TR sensor/switch stuck in low-output state
  • Missing/weak 5V reference or ground at the sensor

Fault status

⚠️ Status
Transmission Range Sensor A Circuit Low — PCM detected a low-voltage/ground condition on the Transmission Range (PRNDL) Sensor A circuit. Inspect wiring, connector, sensor, and related reference/ground circuits.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

P0705 P0706 P0708 P0709 P0700
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Code

P0707

HUMMER P — Powertrain

Transmission Range Sensor Circuit Low Input

Brand: HUMMER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground in TR sensor A wiring
  • Open or high-resistance wiring/connectors between sensor and PCM
  • Corroded, loose, or damaged connector at the sensor or PCM
  • Faulty transmission range (park/neutral) position sensor or switch
  • Poor ground or lost reference voltage from PCM
  • Incorrectly adjusted or mechanically damaged shift selector

Symptoms

  • Check Engine Light (MIL) illuminated and DTC P0707 stored
  • Gear indicator may show incorrect position or be erratic
  • Engine may not crank (starter inhibited) because PCM thinks vehicle not in Park/Neutral
  • Transmission may enter limp/ failsafe mode or exhibit abnormal shifting
  • Intermittent loss of gear selection detection

What to check

  • Scan for stored/related DTCs and review freeze-frame/live data (PRNDL status, sensor voltage)
  • Visual inspection of the range sensor connector and wiring for corrosion, damage, or pin pushed out
  • Backprobe sensor signal, reference, and ground circuits with key ON (engine OFF) and observe voltages
  • Check continuity and resistance between sensor terminals and PCM connector pins
  • Verify PCM provides the expected reference voltage (typically ~5 V) and a good ground
  • Wiggle test wiring while monitoring signal for intermittent faults

Signal parameters

  • Reference voltage: typically ~5.0 V from PCM to range sensor (key ON, engine OFF)
  • Signal voltage: varies by gear; a 'low' fault is usually detected when signal is below ~0.3–0.5 V (vehicle-dependent)
  • Open circuit: very high resistance or infinite between sensor signal and PCM
  • Short to ground: continuity from signal circuit to chassis ground (near 0 Ω)
  • Short to battery: presence of battery voltage on signal when it should be low indicates short/high

Diagnostic algorithm

  1. Retrieve P0707 and any other transmission/PRNDL codes; record freeze frame and live data.
  2. Verify battery voltage is stable; low battery can cause spurious sensor readings.
  3. Perform visual inspection of transmission range sensor connector and harness for damage or corrosion.
  4. Backprobe the sensor with key ON (engine OFF): check reference (~5V), signal voltage, and ground. Note values in each gear position while moving shifter through PRNDL.
  5. If reference or ground is missing, trace wiring back to PCM and repair the supply/ground circuit (check fuses/relays as applicable).
  6. If reference and ground are present but signal is low, disconnect the sensor and measure signal circuit to chassis ground and to PCM: check for short to ground or open circuit.
  7. Perform continuity/resistance check between sensor connector pin and PCM pin. Repair any opens/shorts found in harness or connector.
  8. If wiring and connectors test good, replace the transmission range sensor/switch, then clear codes.
  9. Test drive and re-check live data and DTC status. If fault persists after sensor replacement and wiring repairs, consider PCM diagnosis or replacement.
  10. After repair, verify proper gear selection indication and starter enable/disable function as applicable.

Likely causes

  • Water-corroded connector at the transmission range sensor causing low signal
  • Wiring chafed and shorted to chassis ground
  • Broken or intermittent wires in the harness between the sensor and PCM
  • Failed TR sensor/switch stuck in low-output state
  • Missing/weak 5V reference or ground at the sensor

Fault status

⚠️ Status
Transmission Range Sensor A Circuit Low — PCM detected a low-voltage/ground condition on the Transmission Range (PRNDL) Sensor A circuit. Inspect wiring, connector, sensor, and related reference/ground circuits.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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P0705 P0706 P0708 P0709 P0700
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Code

P0707

LAND ROVER P — Powertrain

sensor Transmission Range - low input circuit high input

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground in TR sensor A wiring
  • Open or high-resistance wiring/connectors between sensor and PCM
  • Corroded, loose, or damaged connector at the sensor or PCM
  • Faulty transmission range (park/neutral) position sensor or switch
  • Poor ground or lost reference voltage from PCM
  • Incorrectly adjusted or mechanically damaged shift selector

Symptoms

  • Check Engine Light (MIL) illuminated and DTC P0707 stored
  • Gear indicator may show incorrect position or be erratic
  • Engine may not crank (starter inhibited) because PCM thinks vehicle not in Park/Neutral
  • Transmission may enter limp/ failsafe mode or exhibit abnormal shifting
  • Intermittent loss of gear selection detection

What to check

  • Scan for stored/related DTCs and review freeze-frame/live data (PRNDL status, sensor voltage)
  • Visual inspection of the range sensor connector and wiring for corrosion, damage, or pin pushed out
  • Backprobe sensor signal, reference, and ground circuits with key ON (engine OFF) and observe voltages
  • Check continuity and resistance between sensor terminals and PCM connector pins
  • Verify PCM provides the expected reference voltage (typically ~5 V) and a good ground
  • Wiggle test wiring while monitoring signal for intermittent faults

Signal parameters

  • Reference voltage: typically ~5.0 V from PCM to range sensor (key ON, engine OFF)
  • Signal voltage: varies by gear; a 'low' fault is usually detected when signal is below ~0.3–0.5 V (vehicle-dependent)
  • Open circuit: very high resistance or infinite between sensor signal and PCM
  • Short to ground: continuity from signal circuit to chassis ground (near 0 Ω)
  • Short to battery: presence of battery voltage on signal when it should be low indicates short/high

Diagnostic algorithm

  1. Retrieve P0707 and any other transmission/PRNDL codes; record freeze frame and live data.
  2. Verify battery voltage is stable; low battery can cause spurious sensor readings.
  3. Perform visual inspection of transmission range sensor connector and harness for damage or corrosion.
  4. Backprobe the sensor with key ON (engine OFF): check reference (~5V), signal voltage, and ground. Note values in each gear position while moving shifter through PRNDL.
  5. If reference or ground is missing, trace wiring back to PCM and repair the supply/ground circuit (check fuses/relays as applicable).
  6. If reference and ground are present but signal is low, disconnect the sensor and measure signal circuit to chassis ground and to PCM: check for short to ground or open circuit.
  7. Perform continuity/resistance check between sensor connector pin and PCM pin. Repair any opens/shorts found in harness or connector.
  8. If wiring and connectors test good, replace the transmission range sensor/switch, then clear codes.
  9. Test drive and re-check live data and DTC status. If fault persists after sensor replacement and wiring repairs, consider PCM diagnosis or replacement.
  10. After repair, verify proper gear selection indication and starter enable/disable function as applicable.

Likely causes

  • Water-corroded connector at the transmission range sensor causing low signal
  • Wiring chafed and shorted to chassis ground
  • Broken or intermittent wires in the harness between the sensor and PCM
  • Failed TR sensor/switch stuck in low-output state
  • Missing/weak 5V reference or ground at the sensor

Fault status

⚠️ Status
Transmission Range Sensor A Circuit Low — PCM detected a low-voltage/ground condition on the Transmission Range (PRNDL) Sensor A circuit. Inspect wiring, connector, sensor, and related reference/ground circuits.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

P0705 P0706 P0708 P0709 P0700
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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Code

P0707

MERCEDES-BENZ P — Powertrain

Transmission Range Sensor Circuit Low Input

Brand: MERCEDES-BENZ
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Short to ground in TR sensor A wiring
  • Open or high-resistance wiring/connectors between sensor and PCM
  • Corroded, loose, or damaged connector at the sensor or PCM
  • Faulty transmission range (park/neutral) position sensor or switch
  • Poor ground or lost reference voltage from PCM
  • Incorrectly adjusted or mechanically damaged shift selector

Symptoms

  • Check Engine Light (MIL) illuminated and DTC P0707 stored
  • Gear indicator may show incorrect position or be erratic
  • Engine may not crank (starter inhibited) because PCM thinks vehicle not in Park/Neutral
  • Transmission may enter limp/ failsafe mode or exhibit abnormal shifting
  • Intermittent loss of gear selection detection

What to check

  • Scan for stored/related DTCs and review freeze-frame/live data (PRNDL status, sensor voltage)
  • Visual inspection of the range sensor connector and wiring for corrosion, damage, or pin pushed out
  • Backprobe sensor signal, reference, and ground circuits with key ON (engine OFF) and observe voltages
  • Check continuity and resistance between sensor terminals and PCM connector pins
  • Verify PCM provides the expected reference voltage (typically ~5 V) and a good ground
  • Wiggle test wiring while monitoring signal for intermittent faults

Signal parameters

  • Reference voltage: typically ~5.0 V from PCM to range sensor (key ON, engine OFF)
  • Signal voltage: varies by gear; a 'low' fault is usually detected when signal is below ~0.3–0.5 V (vehicle-dependent)
  • Open circuit: very high resistance or infinite between sensor signal and PCM
  • Short to ground: continuity from signal circuit to chassis ground (near 0 Ω)
  • Short to battery: presence of battery voltage on signal when it should be low indicates short/high

Diagnostic algorithm

  1. Retrieve P0707 and any other transmission/PRNDL codes; record freeze frame and live data.
  2. Verify battery voltage is stable; low battery can cause spurious sensor readings.
  3. Perform visual inspection of transmission range sensor connector and harness for damage or corrosion.
  4. Backprobe the sensor with key ON (engine OFF): check reference (~5V), signal voltage, and ground. Note values in each gear position while moving shifter through PRNDL.
  5. If reference or ground is missing, trace wiring back to PCM and repair the supply/ground circuit (check fuses/relays as applicable).
  6. If reference and ground are present but signal is low, disconnect the sensor and measure signal circuit to chassis ground and to PCM: check for short to ground or open circuit.
  7. Perform continuity/resistance check between sensor connector pin and PCM pin. Repair any opens/shorts found in harness or connector.
  8. If wiring and connectors test good, replace the transmission range sensor/switch, then clear codes.
  9. Test drive and re-check live data and DTC status. If fault persists after sensor replacement and wiring repairs, consider PCM diagnosis or replacement.
  10. After repair, verify proper gear selection indication and starter enable/disable function as applicable.

Likely causes

  • Water-corroded connector at the transmission range sensor causing low signal
  • Wiring chafed and shorted to chassis ground
  • Broken or intermittent wires in the harness between the sensor and PCM
  • Failed TR sensor/switch stuck in low-output state
  • Missing/weak 5V reference or ground at the sensor

Fault status

⚠️ Status
Transmission Range Sensor A Circuit Low — PCM detected a low-voltage/ground condition on the Transmission Range (PRNDL) Sensor A circuit. Inspect wiring, connector, sensor, and related reference/ground circuits.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

P0705 P0706 P0708 P0709 P0700
856

Browse 856 MERCEDES-BENZ manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MERCEDES-BENZ

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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