Code
P2105
Generic
P — Powertrain
Throttle Actuator Control System - Forced Engine Shutdown
Views:
UK: 16
EN: 40
RU: 18
AI status
Completed
Completed
100%
Causes
- Faulty electronic throttle body (ETB) or throttle actuator motor
- Damaged or corroded wiring/connectors in throttle actuator or sensor circuits
- Faulty accelerator pedal position (APP) sensor or throttle position (TPS) sensors
- Low battery voltage or poor charging system
- Faulty PCM or internal driver failure
- Software bug or calibration issue in PCM
Symptoms
- Engine shuts down or goes into limp mode / reduced power
- Loss of throttle control or unresponsive accelerator
- Check Engine Light (MIL) illuminated
- Stored P2105 with related throttle/pedal DTCs
- Intermittent starts or stalling after throttle input
- Limited engine RPM or engine won’t accelerate normally
What to check
- Scan for all stored/pending DTCs and capture freeze frame data
- Verify battery voltage and charging system (battery fully charged, >12.4 V at key-on)
- Inspect fuses/relays for throttle/PCM power circuits
- Visually inspect throttle body, connectors, and harness for damage or corrosion
- Check for mechanical binding of throttle plate and smooth movement
- Compare TPS and APP sensor voltages/channels for correlation
Signal parameters
- Throttle position sensor (TPS) output: typically 0.5–4.5 V depending on angle (two channels expected to correlate)
- Accelerator pedal position (APP) sensors: dual redundant voltages ~0.5–4.5 V that should track together
- Throttle actuator motor supply: battery voltage (~12 V) present on motor supply circuit when commanded
- Motor control signal: PWM or H-bridge control from PCM — frequency and duty vary by manufacturer
- Motor current: should be within manufacturer-specified range; excessive current indicates binding or short
- Ground continuity on PCM and throttle body grounds: low resistance (near 0 ohms) to chassis
Diagnostic algorithm
- Retrieve all DTCs and freeze frame, note related codes (APP/TPS/other throttle codes). Clear DTCs and attempt to replicate under safe conditions.
- Verify battery state of charge and charging system; charge battery and retest if voltage low.
- Inspect fuses, relays, and wiring connectors for the throttle body and PCM. Repair any corrosion, damaged wires or poor pin contact.
- With a scan tool, monitor TPS and APP sensor signals (both channels) at key-on and during pedal movement; look for proper voltage ranges and correlation between redundant channels.
- Monitor throttle actuator command and feedback (throttle plate angle) while commanding throttle via scan tool. Confirm actuator moves smoothly and feedback follows command.
- Measure motor supply voltage and ground at the throttle body during commanded movement. Check for voltage drops under load.
- Perform a wiggle test on harness while observing live data and watch for DTCs or signal changes. Isolate intermittent wiring faults.
- If motor draws excessive current or fails to respond, disconnect actuator and measure resistance of motor windings (follow manufacturer specs). Replace throttle body if motor is faulty or windings shorted.
- Check for mechanical obstruction — remove and inspect throttle plate and bore for carbon buildup or binding. Clean or repair as necessary.
- If wiring, sensors, and actuator test OK, suspect PCM driver or software. Check service information for software updates or reflash procedure before replacing PCM. If PCM replacement required, follow programming/relearn procedures.
- After repairs, clear codes and perform functional tests and a road test to ensure code does not return.
Likely causes
- Open/shorted motor supply or ground to the throttle actuator
- Intermittent connector or pin corrosion at throttle body harness
- Inconsistent or out-of-range TPS/APP sensor signals triggering shutdown
- Battery voltage drop or crank/engine stall during high-current motor command
- PCM detected excessive motor current (shorted motor windings) and disabled output
Fault status
Status
PCM detected a throttle actuator control fault and executed a forced engine shutdown / limp protection to prevent potential damage or unsafe operation.
Repair difficulty: Medium
Diagnostic time: 1.5 - 4.0 hours
Similar codes
Workshop Manuals
Available brands with manuals
2
AUDI 11
6-speed manual gearbox 0B1, front-wheel drive — Workshop Manual (Edition 05.2014)
Workshop Manual199,00 UAH
Audi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop Manual199,00 UAH
AUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
Workshop Manual199,00 UAH
Audi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)
Workshop Manual199,00 UAH
Audi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop Manual199,00 UAH
Audi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop Manual199,00 UAH
Audi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
Workshop Manual199,00 UAH
Audi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop Manual199,00 UAH
LAND ROVER 3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P2105
HUMMER
P — Powertrain
Throttle Actuator Control (TAC) System - Forced Engine Shutdown
Views:
UK: 8
EN: 27
RU: 20
AI status
Completed
Completed
100%
Causes
- Faulty electronic throttle body (ETB) or throttle actuator motor
- Damaged or corroded wiring/connectors in throttle actuator or sensor circuits
- Faulty accelerator pedal position (APP) sensor or throttle position (TPS) sensors
- Low battery voltage or poor charging system
- Faulty PCM or internal driver failure
- Software bug or calibration issue in PCM
Symptoms
- Engine shuts down or goes into limp mode / reduced power
- Loss of throttle control or unresponsive accelerator
- Check Engine Light (MIL) illuminated
- Stored P2105 with related throttle/pedal DTCs
- Intermittent starts or stalling after throttle input
- Limited engine RPM or engine won’t accelerate normally
What to check
- Scan for all stored/pending DTCs and capture freeze frame data
- Verify battery voltage and charging system (battery fully charged, >12.4 V at key-on)
- Inspect fuses/relays for throttle/PCM power circuits
- Visually inspect throttle body, connectors, and harness for damage or corrosion
- Check for mechanical binding of throttle plate and smooth movement
- Compare TPS and APP sensor voltages/channels for correlation
Signal parameters
- Throttle position sensor (TPS) output: typically 0.5–4.5 V depending on angle (two channels expected to correlate)
- Accelerator pedal position (APP) sensors: dual redundant voltages ~0.5–4.5 V that should track together
- Throttle actuator motor supply: battery voltage (~12 V) present on motor supply circuit when commanded
- Motor control signal: PWM or H-bridge control from PCM — frequency and duty vary by manufacturer
- Motor current: should be within manufacturer-specified range; excessive current indicates binding or short
- Ground continuity on PCM and throttle body grounds: low resistance (near 0 ohms) to chassis
Diagnostic algorithm
- Retrieve all DTCs and freeze frame, note related codes (APP/TPS/other throttle codes). Clear DTCs and attempt to replicate under safe conditions.
- Verify battery state of charge and charging system; charge battery and retest if voltage low.
- Inspect fuses, relays, and wiring connectors for the throttle body and PCM. Repair any corrosion, damaged wires or poor pin contact.
- With a scan tool, monitor TPS and APP sensor signals (both channels) at key-on and during pedal movement; look for proper voltage ranges and correlation between redundant channels.
- Monitor throttle actuator command and feedback (throttle plate angle) while commanding throttle via scan tool. Confirm actuator moves smoothly and feedback follows command.
- Measure motor supply voltage and ground at the throttle body during commanded movement. Check for voltage drops under load.
- Perform a wiggle test on harness while observing live data and watch for DTCs or signal changes. Isolate intermittent wiring faults.
- If motor draws excessive current or fails to respond, disconnect actuator and measure resistance of motor windings (follow manufacturer specs). Replace throttle body if motor is faulty or windings shorted.
- Check for mechanical obstruction — remove and inspect throttle plate and bore for carbon buildup or binding. Clean or repair as necessary.
- If wiring, sensors, and actuator test OK, suspect PCM driver or software. Check service information for software updates or reflash procedure before replacing PCM. If PCM replacement required, follow programming/relearn procedures.
- After repairs, clear codes and perform functional tests and a road test to ensure code does not return.
Likely causes
- Open/shorted motor supply or ground to the throttle actuator
- Intermittent connector or pin corrosion at throttle body harness
- Inconsistent or out-of-range TPS/APP sensor signals triggering shutdown
- Battery voltage drop or crank/engine stall during high-current motor command
- PCM detected excessive motor current (shorted motor windings) and disabled output
Fault status
Status
PCM detected a throttle actuator control fault and executed a forced engine shutdown / limp protection to prevent potential damage or unsafe operation.
Repair difficulty: Medium
Diagnostic time: 1.5 - 4.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P2105
LAND ROVER
P — Powertrain
Throttle Actuator Control System - Forced Shutdown motor
Views:
UK: 7
EN: 22
RU: 11
AI status
Completed
Completed
100%
Causes
- Faulty electronic throttle body (ETB) or throttle actuator motor
- Damaged or corroded wiring/connectors in throttle actuator or sensor circuits
- Faulty accelerator pedal position (APP) sensor or throttle position (TPS) sensors
- Low battery voltage or poor charging system
- Faulty PCM or internal driver failure
- Software bug or calibration issue in PCM
Symptoms
- Engine shuts down or goes into limp mode / reduced power
- Loss of throttle control or unresponsive accelerator
- Check Engine Light (MIL) illuminated
- Stored P2105 with related throttle/pedal DTCs
- Intermittent starts or stalling after throttle input
- Limited engine RPM or engine won’t accelerate normally
What to check
- Scan for all stored/pending DTCs and capture freeze frame data
- Verify battery voltage and charging system (battery fully charged, >12.4 V at key-on)
- Inspect fuses/relays for throttle/PCM power circuits
- Visually inspect throttle body, connectors, and harness for damage or corrosion
- Check for mechanical binding of throttle plate and smooth movement
- Compare TPS and APP sensor voltages/channels for correlation
Signal parameters
- Throttle position sensor (TPS) output: typically 0.5–4.5 V depending on angle (two channels expected to correlate)
- Accelerator pedal position (APP) sensors: dual redundant voltages ~0.5–4.5 V that should track together
- Throttle actuator motor supply: battery voltage (~12 V) present on motor supply circuit when commanded
- Motor control signal: PWM or H-bridge control from PCM — frequency and duty vary by manufacturer
- Motor current: should be within manufacturer-specified range; excessive current indicates binding or short
- Ground continuity on PCM and throttle body grounds: low resistance (near 0 ohms) to chassis
Diagnostic algorithm
- Retrieve all DTCs and freeze frame, note related codes (APP/TPS/other throttle codes). Clear DTCs and attempt to replicate under safe conditions.
- Verify battery state of charge and charging system; charge battery and retest if voltage low.
- Inspect fuses, relays, and wiring connectors for the throttle body and PCM. Repair any corrosion, damaged wires or poor pin contact.
- With a scan tool, monitor TPS and APP sensor signals (both channels) at key-on and during pedal movement; look for proper voltage ranges and correlation between redundant channels.
- Monitor throttle actuator command and feedback (throttle plate angle) while commanding throttle via scan tool. Confirm actuator moves smoothly and feedback follows command.
- Measure motor supply voltage and ground at the throttle body during commanded movement. Check for voltage drops under load.
- Perform a wiggle test on harness while observing live data and watch for DTCs or signal changes. Isolate intermittent wiring faults.
- If motor draws excessive current or fails to respond, disconnect actuator and measure resistance of motor windings (follow manufacturer specs). Replace throttle body if motor is faulty or windings shorted.
- Check for mechanical obstruction — remove and inspect throttle plate and bore for carbon buildup or binding. Clean or repair as necessary.
- If wiring, sensors, and actuator test OK, suspect PCM driver or software. Check service information for software updates or reflash procedure before replacing PCM. If PCM replacement required, follow programming/relearn procedures.
- After repairs, clear codes and perform functional tests and a road test to ensure code does not return.
Likely causes
- Open/shorted motor supply or ground to the throttle actuator
- Intermittent connector or pin corrosion at throttle body harness
- Inconsistent or out-of-range TPS/APP sensor signals triggering shutdown
- Battery voltage drop or crank/engine stall during high-current motor command
- PCM detected excessive motor current (shorted motor windings) and disabled output
Fault status
Status
PCM detected a throttle actuator control fault and executed a forced engine shutdown / limp protection to prevent potential damage or unsafe operation.
Repair difficulty: Medium
Diagnostic time: 1.5 - 4.0 hours
Similar codes
HTML Workshop Manuals AI manual library for LAND ROVER Click to show available manuals 1
LAND ROVER 2015 Discovery Sport HSE
HTML ManualWorkshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email