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Home / DTC / P0829 — Gear load 5-6

P0829 — Gear load 5-6

Detailed page for trouble code P0829.

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Code

P0829

LAND ROVER P — Powertrain

Gear load 5-6

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

Causes

  • Damaged or corroded connector or wiring to the gear-load sensor/switch for gears 5–6
  • Faulty gear-load sensor, range/speed sensor, or selector switch
  • Intermittent open/short on the sensor circuit or poor ground
  • Faulty transmission control module (TCM) or software fault
  • Low/contaminated transmission fluid or internal transmission mechanical fault affecting sensor readings
  • CAN-bus communication error or related module sending wrong data

Symptoms

  • Transmission warning lamp (TCM/Check Engine) illuminated
  • Intermittent or no engagement of 5th and/or 6th gear
  • Harsh, delayed, or incorrect shifts when attempting 5th/6th
  • Vehicle may go into limp mode or default to limited gears
  • Diagnostic scanner shows abnormal or no PID values for gear load/gear position for gears 5–6

What to check

  • Read stored and pending codes with a dealer-level or compatible scan tool; record freeze-frame and live data PIDs
  • Clear codes and perform a controlled road test while monitoring transmission PIDs (gear position, gear load, solenoid states)
  • Visually inspect wiring and connectors for damage, corrosion, pin push-out, or water intrusion at the sensor and TCM connectors
  • Check battery voltage and system grounds; low voltage can cause erroneous signals
  • Check transmission fluid level and condition; very low or contaminated fluid can cause transmission faults
  • If available, confirm if there are any TCM software updates or technical service bulletins (TSBs) from Land Rover

Signal parameters

  • Typical sensor signal: 0–5 V reference (varies with exact sensor design) — signal should change when selecting/engaging 5th or 6th gear
  • Continuity: no open circuit between sensor connector and TCM pin (measure resistance; compare to OEM spec)
  • CAN/Circuit: related transmission/CAN messages for gear state should be present when monitored with a scan tool
  • During engagement, PID for gear position/load should switch between defined states when shifting into/out of 5th and 6th gear

Diagnostic algorithm

  1. Connect a capable scan tool and record codes, freeze-frame data and live PIDs for gear position, gear load, and solenoid outputs. Note if P0829 is current or intermittent.
  2. Clear codes, then perform a road test while monitoring live data; try to reproduce the symptom and watch the gear-load PID when shifting into 5th and 6th.
  3. Visually inspect connectors and wiring for the 5–6 gear-load sensor/switch and the TCM. Look for corrosion, bent pins, chafing, or water ingress. Repair any obvious damage.
  4. With ignition ON (engine off) and using back-probing where safe, verify reference voltage and signal voltage at the sensor connector. Confirm the signal changes when commanded into 5th/6th (or during a road test).
  5. Check continuity between the sensor connector and the TCM pin to rule out open circuits; check resistance to ground for proper grounding.
  6. If wiring and connector tests pass, compare measured sensor signal to OEM specifications. If out of spec, replace the gear-load sensor/switch.
  7. If sensor and wiring test OK, inspect for internal transmission issues (fluid level/condition) and consider module reprogramming or replacement if TCM is suspected. Check for related codes that indicate internal transmission faults.
  8. After repairs, clear codes and perform final road test to verify P0829 does not return and that 5th/6th gear operation is normal. Document all findings and repairs.

Likely causes

  • Open or shorted wiring harness to the 5–6 gear load sensor
  • Corroded/loose connector at the sensor or TCM
  • Faulty gear-load sensor/switch assembly
  • TCM fault or incorrect software

Fault status

⚠️ Status
Gear load 5-6 circuit/signal fault detected — TCM reports abnormal or missing gear-load input for gears 5 and 6.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

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413

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