Code
P1152
PEUGEOT
P — Powertrain
Throttle control
Views:
UK: 4
EN: 8
RU: 4
AI status
Completed
Completed
100%
Causes
- Faulty electronic throttle body (motor or position sensor)
- Worn or out‑of‑spec accelerator pedal position sensor (APPS)
- Poor electrical connection, damaged wiring or corroded connector in throttle/ pedal circuits
- Blown fuse or poor ground affecting throttle control power
- Carbon build‑up or mechanical binding in throttle plate
- ECU software bug or need for throttle/idle relearn/calibration
Symptoms
- Check Engine Light (MIL) illuminated
- Reduced engine power or limp‑in mode activated
- Poor or delayed throttle response, hesitation or surging
- Unstable or high/low idle
- Inability to accelerate properly
- Throttle pedal feels normal but engine does not respond
What to check
- Read full fault memory and freeze‑frame data with a diagnostic scanner; note any additional codes
- Visual inspection of throttle body, pedal sensor, wiring harnesses and connectors for damage/corrosion
- Verify fuses and grounds related to throttle control and ECU power
- Scan live data: accelerator pedal sensor(s) values, throttle plate position, motor command and feedback
- Compare dual APPS sensor outputs for correlation and opposing slope where applicable
- Check for mechanical binding of the throttle plate and security of throttle body mounting
Signal parameters
- Accelerator pedal sensors: typically 0.2–5.0 V output range; two sensors should track with different slopes — verify both vary smoothly with pedal travel
- Throttle position feedback: closed throttle near ~0.5 V, wide open near ~4.5 V (values are vehicle‑dependent — check factory specs)
- Throttle motor supply: stable battery/ignition switched 12 V present when commanded
- Noisy, stuck or out‑of‑range voltages on the above circuits indicate a problem; measure with a quality multimeter or oscilloscope
- Current draw of actuator should be steady and within factory limits during movement (excessive current suggests binding or short)
Diagnostic algorithm
- Connect a professional scan tool, read/record DTCs and freeze frame; clear codes and attempt to reproduce the failure.
- Inspect wiring, connectors, fuses and grounds related to throttle control and pedal sensors; repair any damage.
- Monitor live data: compare accelerator pedal sensor A vs B and compare pedal position to throttle position when commanded.
- Check supply voltage and ground at the throttle body connector; verify continuity to ECU.
- Manually command the throttle (if tool capable) and observe throttle plate movement and motor current; check for binding or sluggish movement.
- If pedal sensors show incorrect or non‑linear outputs, test and replace pedal module as required.
- Remove throttle body for inspection if mechanical contamination suspected; clean carbon deposits and re‑test.
- If wiring, mechanical and cleaning checks are good but issue persists, bench test or replace the throttle body assembly and program/relearn per manufacturer procedure.
- After any repair, clear codes and perform required relearn/calibration; road test to verify repair and confirm no recurrence.
Likely causes
- Throttle body actuator or position sensor failure
- Low/ intermittent voltage or poor ground at throttle module connector
- Accelerator pedal position sensor out of correlation with throttle position
- Throttle plate binding or excessive carbon restricting movement
- Connector corrosion or broken wires in harness to throttle/ pedal
Fault status
Status
Throttle control fault detected. Engine may enter reduced power (limp) mode. Check throttle body, pedal sensors, wiring and perform calibration.
Repair difficulty: Medium
Diagnostic time: 1.5 - 3.5 hours
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