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Home / DTC / C1244 — Powertrain Indicated Engine Drag Control Malfunction

C1244 — Powertrain Indicated Engine Drag Control Malfunction

Detailed page for trouble code C1244.

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Code

C1244

HUMMER C — Chassis

Powertrain Indicated Engine Drag Control Malfunction

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

Causes

  • Loss of communication on CAN bus between powertrain control module (PCM) and ABS/ESC module
  • Faulty ABS/ESC (EBCM) module or PCM
  • Intermittent or open wiring/connectors between modules (CAN, ground, power)
  • Failed wheel speed sensor(s) or erratic sensor signals
  • Defective brake light/switch or clutch/park/neutral switches used for traction logic
  • Low battery voltage or poor battery/charging system condition

Symptoms

  • Traction control/ESC warning lamp ON
  • Reduced engine power or limited engine torque intervention
  • ABS/traction control functions disabled or intermittent
  • Unexpected or increased engine braking behavior during deceleration
  • Inconsistent or jerky braking/stability behavior at low speeds
  • Related DTCs present in ABS or powertrain modules

What to check

  • Read ABS and PCM for stored and pending trouble codes plus freeze frame data
  • Check for active communication on the vehicle CAN networks (use scan tool to view module list)
  • Inspect battery voltage and charging system; verify good ground connections
  • Visually inspect ABS/PCM harnesses and connectors for corrosion, damage, or water intrusion
  • Check wheel speed sensors and tone rings for damage, contamination, or missing teeth
  • Verify brake switch and other related input switches operate correctly

Signal parameters

  • CAN messages: engine torque request, engine speed (RPM), vehicle speed
  • Wheel speed sensor voltages/pulses and frequency vs. vehicle speed
  • Brake switch status (on/off)
  • ABS wheel-speed derived vehicle speed vs. PCM vehicle speed
  • Module health/heartbeat communication counts and timeouts
  • Battery voltage and transient drops during engine cranking

Diagnostic algorithm

  1. Connect a capable scan tool to read codes and live data from PCM and ABS/ESC modules. Record freeze frame and related codes.
  2. Clear codes and perform a road test to attempt to re-create the fault while monitoring CAN messages, wheel speeds, engine torque request, and module communication status.
  3. If communication drop or mismatched data observed, inspect CAN bus wiring, splice points, and module connectors for corrosion, loose pins, or damage. Repair any faults and retest.
  4. Check battery and charging system; ensure stable voltage. Replace or charge battery if voltage is low or terminals corroded.
  5. Test brake switch operation and associated circuits. Replace or adjust as required.
  6. Test wheel speed sensors and tone rings at each wheel. Clean, repair, or replace defective sensors or damaged rings.
  7. If wiring and sensors are good but communication errors persist, swap or bench-test the ABS/ESC module (if dealer-level procedure available) or the PCM as appropriate, following manufacturer service procedures.
  8. Check for and apply any available module software updates/recalls. After repairs, clear codes and perform final road verification to confirm no reoccurrence.

Likely causes

  • CAN bus communication fault between PCM and EBCM (most common)
  • Faulty ABS/ESC module failing to interpret engine drag/torque data
  • Corroded/damaged connector or wiring at ABS/PCM harness
  • Intermittent wheel speed sensor or ABS tone ring issue
  • Faulty brake switch sending incorrect state to stability system

Fault status

⚠️ Status
Powertrain indicated engine drag/torque control data is invalid or not present; traction/stability control may be disabled.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

C1241 C1245 C1236 C1250
Repair manuals

Manual library for HUMMER

138

Browse 138 HUMMER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

HUMMER

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Code

C1244

HYUNDAI C — Chassis

Front Left(FL) Height Sensor Abnormal

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

Causes

  • Loss of communication on CAN bus between powertrain control module (PCM) and ABS/ESC module
  • Faulty ABS/ESC (EBCM) module or PCM
  • Intermittent or open wiring/connectors between modules (CAN, ground, power)
  • Failed wheel speed sensor(s) or erratic sensor signals
  • Defective brake light/switch or clutch/park/neutral switches used for traction logic
  • Low battery voltage or poor battery/charging system condition

Symptoms

  • Traction control/ESC warning lamp ON
  • Reduced engine power or limited engine torque intervention
  • ABS/traction control functions disabled or intermittent
  • Unexpected or increased engine braking behavior during deceleration
  • Inconsistent or jerky braking/stability behavior at low speeds
  • Related DTCs present in ABS or powertrain modules

What to check

  • Read ABS and PCM for stored and pending trouble codes plus freeze frame data
  • Check for active communication on the vehicle CAN networks (use scan tool to view module list)
  • Inspect battery voltage and charging system; verify good ground connections
  • Visually inspect ABS/PCM harnesses and connectors for corrosion, damage, or water intrusion
  • Check wheel speed sensors and tone rings for damage, contamination, or missing teeth
  • Verify brake switch and other related input switches operate correctly

Signal parameters

  • CAN messages: engine torque request, engine speed (RPM), vehicle speed
  • Wheel speed sensor voltages/pulses and frequency vs. vehicle speed
  • Brake switch status (on/off)
  • ABS wheel-speed derived vehicle speed vs. PCM vehicle speed
  • Module health/heartbeat communication counts and timeouts
  • Battery voltage and transient drops during engine cranking

Diagnostic algorithm

  1. Connect a capable scan tool to read codes and live data from PCM and ABS/ESC modules. Record freeze frame and related codes.
  2. Clear codes and perform a road test to attempt to re-create the fault while monitoring CAN messages, wheel speeds, engine torque request, and module communication status.
  3. If communication drop or mismatched data observed, inspect CAN bus wiring, splice points, and module connectors for corrosion, loose pins, or damage. Repair any faults and retest.
  4. Check battery and charging system; ensure stable voltage. Replace or charge battery if voltage is low or terminals corroded.
  5. Test brake switch operation and associated circuits. Replace or adjust as required.
  6. Test wheel speed sensors and tone rings at each wheel. Clean, repair, or replace defective sensors or damaged rings.
  7. If wiring and sensors are good but communication errors persist, swap or bench-test the ABS/ESC module (if dealer-level procedure available) or the PCM as appropriate, following manufacturer service procedures.
  8. Check for and apply any available module software updates/recalls. After repairs, clear codes and perform final road verification to confirm no reoccurrence.

Likely causes

  • CAN bus communication fault between PCM and EBCM (most common)
  • Faulty ABS/ESC module failing to interpret engine drag/torque data
  • Corroded/damaged connector or wiring at ABS/PCM harness
  • Intermittent wheel speed sensor or ABS tone ring issue
  • Faulty brake switch sending incorrect state to stability system

Fault status

⚠️ Status
Powertrain indicated engine drag/torque control data is invalid or not present; traction/stability control may be disabled.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

C1241 C1245 C1236 C1250
371

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

HYUNDAI

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Keep it short and practical. Up to 500 characters.
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Code

C1244

Other C — Chassis

ABS Outlet Valve Coil LR Circuit Short To Battery

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

Causes

  • Loss of communication on CAN bus between powertrain control module (PCM) and ABS/ESC module
  • Faulty ABS/ESC (EBCM) module or PCM
  • Intermittent or open wiring/connectors between modules (CAN, ground, power)
  • Failed wheel speed sensor(s) or erratic sensor signals
  • Defective brake light/switch or clutch/park/neutral switches used for traction logic
  • Low battery voltage or poor battery/charging system condition

Symptoms

  • Traction control/ESC warning lamp ON
  • Reduced engine power or limited engine torque intervention
  • ABS/traction control functions disabled or intermittent
  • Unexpected or increased engine braking behavior during deceleration
  • Inconsistent or jerky braking/stability behavior at low speeds
  • Related DTCs present in ABS or powertrain modules

What to check

  • Read ABS and PCM for stored and pending trouble codes plus freeze frame data
  • Check for active communication on the vehicle CAN networks (use scan tool to view module list)
  • Inspect battery voltage and charging system; verify good ground connections
  • Visually inspect ABS/PCM harnesses and connectors for corrosion, damage, or water intrusion
  • Check wheel speed sensors and tone rings for damage, contamination, or missing teeth
  • Verify brake switch and other related input switches operate correctly

Signal parameters

  • CAN messages: engine torque request, engine speed (RPM), vehicle speed
  • Wheel speed sensor voltages/pulses and frequency vs. vehicle speed
  • Brake switch status (on/off)
  • ABS wheel-speed derived vehicle speed vs. PCM vehicle speed
  • Module health/heartbeat communication counts and timeouts
  • Battery voltage and transient drops during engine cranking

Diagnostic algorithm

  1. Connect a capable scan tool to read codes and live data from PCM and ABS/ESC modules. Record freeze frame and related codes.
  2. Clear codes and perform a road test to attempt to re-create the fault while monitoring CAN messages, wheel speeds, engine torque request, and module communication status.
  3. If communication drop or mismatched data observed, inspect CAN bus wiring, splice points, and module connectors for corrosion, loose pins, or damage. Repair any faults and retest.
  4. Check battery and charging system; ensure stable voltage. Replace or charge battery if voltage is low or terminals corroded.
  5. Test brake switch operation and associated circuits. Replace or adjust as required.
  6. Test wheel speed sensors and tone rings at each wheel. Clean, repair, or replace defective sensors or damaged rings.
  7. If wiring and sensors are good but communication errors persist, swap or bench-test the ABS/ESC module (if dealer-level procedure available) or the PCM as appropriate, following manufacturer service procedures.
  8. Check for and apply any available module software updates/recalls. After repairs, clear codes and perform final road verification to confirm no reoccurrence.

Likely causes

  • CAN bus communication fault between PCM and EBCM (most common)
  • Faulty ABS/ESC module failing to interpret engine drag/torque data
  • Corroded/damaged connector or wiring at ABS/PCM harness
  • Intermittent wheel speed sensor or ABS tone ring issue
  • Faulty brake switch sending incorrect state to stability system

Fault status

⚠️ Status
Powertrain indicated engine drag/torque control data is invalid or not present; traction/stability control may be disabled.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

C1241 C1245 C1236 C1250
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