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Home / DTC / C1219 — Throttle Position Sensor(TPS)

C1219 — Throttle Position Sensor(TPS)

Detailed page for trouble code C1219.

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Code

C1219

HYUNDAI C — Chassis

Throttle Position Sensor(TPS)

Brand: HYUNDAI
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open, shorted or corroded TPS connector or wiring
  • Failed TPS/potentiometer (internal wear or contamination)
  • Loss of 5V reference or ground from engine control module
  • Throttle body mechanical binding, misadjustment or carbon buildup
  • Intermittent connection due to moisture, broken wire or terminal
  • Faulty engine control/ABS/ESC module (less common)

Symptoms

  • Check Engine light or corresponding chassis warning lamp illuminated
  • Engine runs rough, hesitation, surging or poor idle
  • Reduced engine power or limp-home mode
  • Unresponsive or erratic throttle response
  • Transmission shift/driveability abnormalities (on drive-by-wire systems)

What to check

  • Read stored codes and freeze-frame data; note any related codes
  • Visual inspection of TPS connector for corrosion, bent pins, water intrusion
  • Check for presence of 5V reference and good ground at TPS harness with ignition ON
  • Measure TPS signal voltage at closed throttle and while opening throttle — it should change smoothly
  • Wiggle test harness and throttle linkage while monitoring live data for intermittent changes
  • Inspect throttle body for carbon buildup and free movement of throttle plate

Signal parameters

  • Reference voltage: typically ~5.0 V (check manufacturer tolerance)
  • Ground: near 0 V
  • Signal output: variable 0.2–4.8 V (closed throttle low end; wide open throttle high end). Should change smoothly and monotonically with throttle movement
  • No erratic spikes, dropouts, or sudden jumps during slow throttle sweep
  • If equipped, two sensors or redundant circuits must correlate within manufacturer limits

Diagnostic algorithm

  1. Retrieve all DTCs and freeze-frame data. Note related powertrain/chassis codes that may affect diagnosis.
  2. Perform a visual inspection: connector condition, wiring chafing, corrosion, and secure mounting of TPS/throttle body.
  3. With ignition ON (engine OFF), backprobe connector: verify ~5V reference and good ground at terminals. If reference is missing, trace fuse/power/ECM supply.
  4. Measure TPS signal voltage at closed throttle. Slowly open throttle and confirm the voltage increases smoothly to the expected high value. Check for dead zones, jumps or noise.
  5. Wiggle the wiring harness and connector while monitoring live signal for intermittent faults. Repair any intermittent wiring/connector faults found.
  6. If signal is out of range or noisy, disconnect harness and inspect pins. If wiring and connectors are good, replace TPS and re-test.
  7. After replacement or repair, clear codes and perform throttle relearn/idle relearn if required by vehicle procedure; road test and verify the issue is resolved.
  8. If TPS and wiring check good but fault returns, test or consult/replace the control module only after verifying all upstream circuits and grounds.

Likely causes

  • Damaged or loose TPS connector/pins
  • Failed TPS (internal wear or failed electronics)
  • Open or short in reference (5V) or ground circuit
  • Contaminated or sticking throttle plate affecting sensor movement
  • Intermittent wiring fault between TPS and control module

Fault status

⚠️ Status
C1219 — Throttle Position Sensor circuit/signal fault detected. Check TPS, wiring, and 5V reference/ground; may cause poor throttle response or limp mode.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0120 P0121 P0122 P0123 P0124 P2135
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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Code

C1219

Other C — Chassis

Lamp ABS Warning Output Circuit Open

Brand: Other
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open, shorted or corroded TPS connector or wiring
  • Failed TPS/potentiometer (internal wear or contamination)
  • Loss of 5V reference or ground from engine control module
  • Throttle body mechanical binding, misadjustment or carbon buildup
  • Intermittent connection due to moisture, broken wire or terminal
  • Faulty engine control/ABS/ESC module (less common)

Symptoms

  • Check Engine light or corresponding chassis warning lamp illuminated
  • Engine runs rough, hesitation, surging or poor idle
  • Reduced engine power or limp-home mode
  • Unresponsive or erratic throttle response
  • Transmission shift/driveability abnormalities (on drive-by-wire systems)

What to check

  • Read stored codes and freeze-frame data; note any related codes
  • Visual inspection of TPS connector for corrosion, bent pins, water intrusion
  • Check for presence of 5V reference and good ground at TPS harness with ignition ON
  • Measure TPS signal voltage at closed throttle and while opening throttle — it should change smoothly
  • Wiggle test harness and throttle linkage while monitoring live data for intermittent changes
  • Inspect throttle body for carbon buildup and free movement of throttle plate

Signal parameters

  • Reference voltage: typically ~5.0 V (check manufacturer tolerance)
  • Ground: near 0 V
  • Signal output: variable 0.2–4.8 V (closed throttle low end; wide open throttle high end). Should change smoothly and monotonically with throttle movement
  • No erratic spikes, dropouts, or sudden jumps during slow throttle sweep
  • If equipped, two sensors or redundant circuits must correlate within manufacturer limits

Diagnostic algorithm

  1. Retrieve all DTCs and freeze-frame data. Note related powertrain/chassis codes that may affect diagnosis.
  2. Perform a visual inspection: connector condition, wiring chafing, corrosion, and secure mounting of TPS/throttle body.
  3. With ignition ON (engine OFF), backprobe connector: verify ~5V reference and good ground at terminals. If reference is missing, trace fuse/power/ECM supply.
  4. Measure TPS signal voltage at closed throttle. Slowly open throttle and confirm the voltage increases smoothly to the expected high value. Check for dead zones, jumps or noise.
  5. Wiggle the wiring harness and connector while monitoring live signal for intermittent faults. Repair any intermittent wiring/connector faults found.
  6. If signal is out of range or noisy, disconnect harness and inspect pins. If wiring and connectors are good, replace TPS and re-test.
  7. After replacement or repair, clear codes and perform throttle relearn/idle relearn if required by vehicle procedure; road test and verify the issue is resolved.
  8. If TPS and wiring check good but fault returns, test or consult/replace the control module only after verifying all upstream circuits and grounds.

Likely causes

  • Damaged or loose TPS connector/pins
  • Failed TPS (internal wear or failed electronics)
  • Open or short in reference (5V) or ground circuit
  • Contaminated or sticking throttle plate affecting sensor movement
  • Intermittent wiring fault between TPS and control module

Fault status

⚠️ Status
C1219 — Throttle Position Sensor circuit/signal fault detected. Check TPS, wiring, and 5V reference/ground; may cause poor throttle response or limp mode.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

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P0120 P0121 P0122 P0123 P0124 P2135
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