P1153

Code

CITROEN P — Powertrain

Motorised throttle position end stop programming

Brand: CITROEN

Type: P — Powertrain

Views: UK: 4 EN: 5 RU: 1

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Incomplete or interrupted end-stop/adaptation procedure
Low or unstable battery/voltage during programming
Faulty motorised throttle body (motor or position sensor)
Wiring harness or connector fault between throttle body and ECU
Corroded/loose connectors or blown fuse/relay affecting throttle power or signal
ECU or software-related fault preventing adaptation

Symptoms

Malfunction Indicator Lamp (MIL/Check Engine) illuminated
Reduced engine power / limp-home mode or loss of normal throttle response
Erratic idle, stalling, or high idle
Cruise control disabled or unavailable
Throttle response delayed, inconsistent, or stuck at a fixed position
Stored P1153 and possibly other throttle-related codes

What to check

Read all stored and pending DTCs and freeze-frame data with a capable scan tool
Check vehicle battery voltage and charging system (at rest and during adaptation)
Visually inspect throttle body connector and wiring for corrosion, damage, or loose pins
Confirm fuses and relays related to throttle body power and ECU are intact
Attempt a throttle actuator self-test / cycle from the scanner and observe movement
Attempt the manufacturer-specified end-stop/adaptation procedure with an OEM-level scan tool and note failure point or error messages

Signal parameters

Throttle position sensor voltage: typically ~0.5 V (closed) to ~4.5 V (wide open) — verify smooth change without dropouts
Throttle angle (degrees): 0° (closed) to manufacturer max — should move smoothly during actuator test
Actuator motor duty cycle / command (%) during learn procedure
Motor current draw (A): excessive current may indicate binding
Battery voltage (V): should be stable >12.0 V during programming, preferably >12.5 V
Adaptation status / learned flags (from scan tool): success/failure codes

Diagnostic algorithm

Record all DTCs and freeze-frame data. Note battery voltage and conditions during the event.
Ensure battery is fully charged and charging system is healthy. Use a charger if battery is low. Retest adaptation with stable voltage.
Visually inspect throttle body connector, pins and wiring. Repair any damaged wiring, clean and secure connectors.
Using an OEM or capable scan tool, perform the manufacturer-specified throttle end-stop / adaptation (relearn) procedure. Observe results and any live data errors.
If adaptation fails, run an actuator test: command throttle open/close while watching throttle angle, TPS voltage, motor current and check for mechanical binding or abnormal current draw.
If motor does not move or current is excessive, remove and inspect throttle body for carbon buildup, mechanical obstruction or internal failure. Clean if minor binding is found.
If sensor outputs are inconsistent or out of expected range during movement, test TPS signals with a multimeter/oscilloscope and inspect wiring continuity to ECU.
Repair/replace faulty components (connector, wiring, throttle body) as indicated. After repairs, clear codes and repeat adaptation procedure.
If adaptation still fails after hardware checks and repairs, check ECU software level and consider updating or reflashing per manufacturer guidance, then repeat relearn.
After successful adaptation, road test and confirm no reoccurrence of the DTC.

Likely causes

Battery voltage dropped below acceptable level while performing adaptation (battery < 12.0 V or charging system weak)
Throttle body motor has excessive friction or mechanical binding preventing full travel
Throttle position sensor (angle sensor) provides incorrect voltage/angle feedback during learn routine
Damaged pins, corroded connector, or intermittent wiring between throttle body and engine ECU
Previous repair or replacement of throttle body not followed by required relearn procedure
CAN bus or ECU communication glitch interrupted programming

Fault status

⚠️ Status

Motorised throttle position end stop programming failed or not performed — throttle adaptation incomplete. Throttle control may be restricted until end-stop calibration is completed successfully.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0 - 2.5 hours

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P1153 — Motorised throttle position end stop programming