P2545

Code

Generic P — Powertrain

Torque Management Request Input Signal A Range/Performance

Brand: Generic

Type: P — Powertrain

Views: UK: 26 EN: 63 RU: 35

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Damaged or shorted wiring for the torque request circuit
Poor or corroded connector or ground at the sensor or control module
Failed torque request sensor or input device (accelerator pedal module, torque request module, TCM/ECM input)
Intermittent connection caused by broken wire or pin
Faulty engine or transmission control module (ECM/TCM) or internal module fault
Incorrect software/calibration or module programming error

Read and record freeze frame and related codes with a scan tool
Review live data: torque request PID, accelerator position, reference voltage, ground, and related sensor values
Visually inspect connectors and harnesses for damage, corrosion, or water intrusion
Wiggle test wiring while monitoring live data for intermittent changes
Check for related codes (ECM/TCM and communication) that may indicate module or network issues
Verify correct software level/TSBs for the vehicle if available

Typical signal type: low voltage analog or CAN PID depending on vehicle
Common analog voltage range: ~0.5–4.5 V for position-type sensors (0–100% request)
Reference supply typically 5 V (verify with live data)
Signal should be smooth and proportional to pedal/torque request input; no sudden jumps or dropouts
CAN-based torque request appears as a PID value (0–100% or torque Nm) on the bus

Retrieve and record all stored codes and freeze frame data. Note conditions when code set.
Use a scan tool to monitor live PIDs: torque request A, accelerator position, reference voltage, and related inputs. Recreate symptom to confirm code reproducibility.
Perform a visual inspection of the sensor, connector, and wiring for damage, contamination, or corrosion. Repair any obvious faults.
Backprobe the sensor connector and verify reference voltage (usually ~5 V), signal voltage range while operating the pedal or torque request, and good ground. Compare to manufacturer values if available.
If signal is erratic, perform wiggle-testing of wiring while watching live data. Repair or secure wiring as required.
If voltage/signal is not present or out of range, isolate the circuit: check for shorts to battery or ground and continuity to the control module. Repair wiring or connectors.
If wiring and power/ground are good but signal is incorrect, replace the input device (accelerator pedal module or torque request sensor) and retest.
If new sensor and wiring are confirmed good and code returns, consider module fault. Check module communications and update/reflash software per OEM procedures before replacement.
Clear codes and road-test to verify repair.
If intermittent, consider extended road test with data logging to capture failure conditions.

Wiring harness damage or chafed wire between sensor and control module
Corroded/loose connector at sensor or control module
Faulty accelerator pedal position sensor or other torque-requesting sensor/module
Poor ground at control module
Intermittent open/short in signal or reference circuit