Code
C1219
HYUNDAI
C — Chassis
Throttle Position Sensor(TPS)
Views:
UK: 12
EN: 15
RU: 15
AI status
Completed
Completed
100%
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
- Retrieve all DTCs and freeze-frame data. Note related powertrain/chassis codes that may affect diagnosis.
- Perform a visual inspection: connector condition, wiring chafing, corrosion, and secure mounting of TPS/throttle body.
- With ignition ON (engine OFF), backprobe connector: verify ~5V reference and good ground at terminals. If reference is missing, trace fuse/power/ECM supply.
- 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.
- Wiggle the wiring harness and connector while monitoring live signal for intermittent faults. Repair any intermittent wiring/connector faults found.
- If signal is out of range or noisy, disconnect harness and inspect pins. If wiring and connectors are good, replace TPS and re-test.
- 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.
- 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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Code
C1219
Other
C — Chassis
Lamp ABS Warning Output Circuit Open
Views:
UK: 21
EN: 33
RU: 25
AI status
Completed
Completed
100%
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
- Retrieve all DTCs and freeze-frame data. Note related powertrain/chassis codes that may affect diagnosis.
- Perform a visual inspection: connector condition, wiring chafing, corrosion, and secure mounting of TPS/throttle body.
- With ignition ON (engine OFF), backprobe connector: verify ~5V reference and good ground at terminals. If reference is missing, trace fuse/power/ECM supply.
- 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.
- Wiggle the wiring harness and connector while monitoring live signal for intermittent faults. Repair any intermittent wiring/connector faults found.
- If signal is out of range or noisy, disconnect harness and inspect pins. If wiring and connectors are good, replace TPS and re-test.
- 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.
- 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
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email