Engine Speed Input Malfunction
Table of contents
C1272 HYUNDAI Possible Causes
- Faulty Powertrain Control Module (PCM)
- Powertrain Control Module (PCM) harness is open or shorted
- Powertrain Control Module (PCM) circuit poor electrical connection
How do I fix code C1272 HYUNDAI?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C1272 HYUNDAI code
The cost of diagnosing the C1272 HYUNDAI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1272 HYUNDAI Description
The Electronic Power Steering (EPS) Control Module (CM) confirms driver’s driving intention by receiving engine RPM signal from Powertrain Control Module (PCM) or Electronic Control Module (ECM) while judging the failure of vehicle speed sensor. The EPS use a maximum of 45A controlling ESP motor. If EPS motor is operating in idle, or engine rpm decreases due to abnormally high generator load, the engine stops or battery is discharged. To prevent this situation, When motor consumes over 25A in engine idle, EPS CM grounds 12V voltage, which is outputted from ECU, and sends an idle-up signal to engine ECU. If motor consume less than 20A, or vehicle speed is faster than 5Km/h, EPS CM turns OFF the idle signal.