P2132

Code

Generic P — Powertrain

Throttle/Pedal Position Sensor/Switch F Circuit Low

Brand: Generic

Type: P — Powertrain

Views: UK: 25 EN: 67 RU: 51

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Page language: EN

Causes

Open or short to ground in the pedal/throttle sensor F signal circuit
Damaged, corroded, or disconnected connector(s)
Failed pedal position sensor or throttle body position sensor
Poor or broken ground or reference (5V) supply
Water intrusion/damaged wiring harness
Faulty PCM/ECM (less common)

Symptoms

Malfunction Indicator Lamp (MIL) illuminated
Reduced engine power or limp-home mode
Poor, delayed, or erratic throttle response
Engine may hesitate, surge, or stall under load
No-start in some failure conditions

What to check

Read freeze-frame and full DTC list; note any related codes
Scan live data for pedal/throttle sensor F voltage and compare to other pedal sensors if present
Verify 5V reference supply to the sensor and a good ground at the connector
Visually inspect connector and wiring for corrosion, damage, or water entry
Back-probe the signal wire and wiggle harness while observing live data for intermittent faults
Measure continuity between sensor signal pin and PCM pin (with battery disconnected) to check for opens/shorts

Signal parameters

Typical reference voltage: ~5.0 V (key on)
Normal sensor signal range (typical): ~0.5–4.5 V depending on pedal position
Low condition: signal < ~0.2–0.3 V or near 0 V indicates circuit low/short to ground
High condition: signal > ~4.8 V indicates short to battery/over-voltage
Compare sensor F to redundant sensor reading (if vehicle uses dual sensors) for correlation

Diagnostic algorithm

Record freeze-frame data and note related DTCs. Clear codes and attempt to reproduce symptom.
Visually inspect pedal/throttle sensor connectors and wiring for damage, corrosion, or water. Repair obvious issues.
With ignition ON (engine off), back-probe the sensor connector: verify ~5V reference and good ground. If reference or ground absent, trace wiring to source and repair.
Back-probe the signal lead while operating the pedal: confirm signal rises smoothly through expected voltage range. If stuck low, suspect short to ground or sensor failure.
Check continuity between the sensor signal pin and the PCM signal pin with battery disconnected. Repair any opens or shorts to ground.
If wiring and connectors test good, replace the pedal/throttle position sensor (or throttle body sensor as applicable). Reinstall and clear codes, then road-test.
If problem persists after sensor and wiring verification, consider PCM fault and test/replace per manufacturer procedures.
After repairs, erase codes and verify repair by confirming normal sensor voltages and no reoccurrence of P2132.

Likely causes

Broken or chafed wire shorted to chassis ground
Corroded terminal at sensor connector
Sensor internal failure producing very low output voltage
Blown 5V reference or poor ground connection
Aftermarket equipment or recent repair disturbed wiring

Fault status

⚠️ Status

P2132 — Throttle/Pedal Position Sensor/Switch F Circuit Low: The control module sees an abnormally low voltage on the pedal/throttle position sensor F signal circuit, indicating a possible open, short to ground, sensor failure, bad connector, or faulty reference/ground.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours