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Home / DTC / P1217 — Intermittent Pedal Position Sensor C

P1217 — Intermittent Pedal Position Sensor C

Detailed page for trouble code P1217.

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Code

P1217

LAND ROVER P — Powertrain

Intermittent Pedal Position Sensor C

Brand: LAND ROVER
Type: P — Powertrain
AI status
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Page language: EN

Causes

  • Faulty accelerator pedal position sensor C (internal intermittent failure)
  • Damaged, corroded or loose connector at the pedal sensor
  • Broken/chafed wiring harness or intermittent open/short to battery/ground
  • Poor or intermittent sensor ground or reference voltage (5V)
  • Water ingress or contamination of pedal sensor connector
  • Intermittent ECU input or internal ECU fault

Symptoms

  • Check Engine Light (MIL) illuminated intermittently
  • Reduced engine power / limp-home mode or limited throttle response
  • Intermittent hesitation or unresponsive throttle input
  • Inconsistent or jumpy accelerator pedal position readings in scan tool live data
  • Possible no-start or stalls in rare cases when ECU protects system

What to check

  • Read ECU stored and pending codes, review freeze frame data and DTC history
  • Use a scan tool to monitor live pedal position channels (A/B/C) while operating pedal slowly and rapidly
  • Visually inspect pedal sensor connector and harness for corrosion, damage, pins pushed out or water entry
  • Backprobe connector: verify 5V reference supply and good ground present at pedal harness with key ON
  • Wiggle test harness and connectors while observing live data to try to reproduce intermittent fault
  • Check continuity and resistance of signal, 5V and ground circuits from pedal connector to ECU (with ignition OFF)

Signal parameters

  • Typical reference voltage: ~5.0 V supply to pedal sensors (model-dependent)
  • Signal range: ~0.5 V at rest to ~4.5 V at wide-open — exact values depend on vehicle; verify service data
  • Sensor array often provides multiple channels (A/B/C) for redundancy; channels should correlate smoothly as pedal moves
  • No sudden voltage drops to 0 V, spikes to battery voltage, or erratic noise should be present; intermittent loss/correlation faults indicate wiring or sensor issues

Diagnostic algorithm

  1. Capture and record freeze frame and live data from the ECU; note conditions when P1217 set (ignition state, engine load, temperature).
  2. Clear codes and attempt to reproduce while monitoring pedal sensor A/B/C values and ECU throttle demand.
  3. Perform visual inspection of pedal connector and harness; repair any visible corrosion, pin damage, or contamination.
  4. Backprobe the pedal connector: verify steady 5V reference and ground with key ON. If 5V or ground missing or intermittent, trace to source and repair.
  5. Monitor signal voltage on Sensor C while slowly moving pedal through full travel; look for discontinuities, noise or sudden changes.
  6. Wiggle the harness and connectors while monitoring Sensor C to try to reproduce the intermittent condition. If fault appears, repair/replace wiring or connector.
  7. If wiring and connector test good but signal remains intermittent, replace the accelerator pedal sensor assembly.
  8. If sensor and wiring check OK at pedal but fault persists, trace signal wiring to ECU, check continuity and shielding, verify ECU power/grounds. Consider ECU fault if wiring confirmed good.
  9. After repairs clear codes and perform road test under varied conditions to confirm fault does not return. Check for ANY required software/ECU updates per manufacturer service information.

Likely causes

  • Corroded/loose connector at pedal sensor
  • Wiring chafe causing intermittent short or open to signal/ground
  • Internal failure of pedal sensor C (age or contamination)
  • Poor ground or intermittent 5V reference at pedal connector

Fault status

⚠️ Status
Intermittent Pedal Position Sensor C circuit fault detected by ECU. The fault indicates sporadic or inconsistent signal from the pedal sensor C channel; may cause reduced throttle response or limp mode until corrected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

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413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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