Code
P2118
Generic
P — Powertrain
Throttle Actuator A Control Motor Current Range/Performance
Views:
UK: 25
EN: 69
RU: 31
AI status
Completed
Completed
100%
Causes
- Faulty electronic throttle actuator (motor) or internal driver
- Damaged wiring or poor connector contact to throttle actuator
- Short to battery or short to ground in motor control circuit
- Low battery or weak charging system affecting motor current
- Throttle plate binding, contamination, or mechanical obstruction
- PCM/ECM driver fault or internal failure
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power / limp-home mode
- Poor or erratic idle, hesitation or stalling
- Little or no throttle response to accelerator pedal
- Possible whining or abnormal noise from throttle body area
- Other related throttle DTCs present
What to check
- Read freeze frame and all stored DTCs and note operating conditions
- Inspect battery state-of-charge and charging system voltage
- Visual inspection of throttle body connector, pins and harness for damage/corrosion
- Check fuses and relays for the throttle control circuit
- Scan tool: monitor commanded throttle position, actual throttle angle, and motor current/live data
- Backprobe motor supply and ground to verify proper voltage and continuity
Signal parameters
- Actuator motor current (amps)
- Motor supply voltage (V)
- Battery/charging voltage (V)
- Actuator coil resistance (ohms)
- Commanded throttle position (%) or degrees
- Measured throttle plate position (%) or degrees
Diagnostic algorithm
- Retrieve freeze frame and note ambient/battery/engine conditions. Record all related codes.
- Confirm battery voltage is within spec (typically ~12.4–14.8 V with engine running). Recharge or replace weak battery before further testing.
- Visually inspect throttle body connector and wiring for corrosion, bent pins, damaged insulation or pin push-out. Repair any damage.
- With key on (engine off), backprobe motor supply and ground. Verify proper supply voltage and a good ground. Wiggle harness and watch for intermittent changes in voltage or data.
- Use a scan tool to command the throttle (if safe) and observe motor current, commanded vs actual throttle position, and driver duty cycle. Note abnormal current spikes or out-of-range values.
- Measure motor coil resistance at the throttle body (unplugged). Compare to service spec; an open, shorted or out-of-spec reading indicates motor or internal wiring fault.
- Measure actual motor current under operation using a DC clamp meter on the motor supply lead while commanding throttle; compare to expected range.
- Inspect throttle plate and bore for contamination or mechanical binding. Clean per manufacturer procedure if restricted movement is found.
- If wiring and throttle body check good but current readings still abnormal, check for shorts to battery/ground in the control lines and verify PCM grounds and power feeds.
- If tests point to the throttle actuator assembly, replace the throttle body. After replacement, clear codes and perform required throttle relearn/initialization.
- If replacement does not clear the issue, suspect PCM/ECM driver failure and verify PCM power/ground and, if necessary, consult module testing/reprogramming procedures.
Likely causes
- Open or high-resistance motor coil or connector pin
- Shorted coil or driver transistor causing excessive current draw
- Corroded or pushed-out terminal at throttle body connector
- Low battery voltage under load causing abnormal current readings
- Carbon buildup or foreign object restricting throttle plate movement
- Intermittent wiring damage that changes resistance when the harness moves
Fault status
Status
DTC P2118 set when the PCM detects actuator motor current outside normal range or performance thresholds. May cause MIL illumination and force reduced power (limp) mode until the condition is resolved.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P2118
LAND ROVER
P — Powertrain
Current range / performance of throttle actuator control motor Throttle actuator control body range / performance Throttle position sensor / pedal / switch D - performance range / performance
Views:
UK: 6
EN: 37
RU: 15
AI status
Completed
Completed
100%
Causes
- Faulty electronic throttle actuator (motor) or internal driver
- Damaged wiring or poor connector contact to throttle actuator
- Short to battery or short to ground in motor control circuit
- Low battery or weak charging system affecting motor current
- Throttle plate binding, contamination, or mechanical obstruction
- PCM/ECM driver fault or internal failure
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power / limp-home mode
- Poor or erratic idle, hesitation or stalling
- Little or no throttle response to accelerator pedal
- Possible whining or abnormal noise from throttle body area
- Other related throttle DTCs present
What to check
- Read freeze frame and all stored DTCs and note operating conditions
- Inspect battery state-of-charge and charging system voltage
- Visual inspection of throttle body connector, pins and harness for damage/corrosion
- Check fuses and relays for the throttle control circuit
- Scan tool: monitor commanded throttle position, actual throttle angle, and motor current/live data
- Backprobe motor supply and ground to verify proper voltage and continuity
Signal parameters
- Actuator motor current (amps)
- Motor supply voltage (V)
- Battery/charging voltage (V)
- Actuator coil resistance (ohms)
- Commanded throttle position (%) or degrees
- Measured throttle plate position (%) or degrees
Diagnostic algorithm
- Retrieve freeze frame and note ambient/battery/engine conditions. Record all related codes.
- Confirm battery voltage is within spec (typically ~12.4–14.8 V with engine running). Recharge or replace weak battery before further testing.
- Visually inspect throttle body connector and wiring for corrosion, bent pins, damaged insulation or pin push-out. Repair any damage.
- With key on (engine off), backprobe motor supply and ground. Verify proper supply voltage and a good ground. Wiggle harness and watch for intermittent changes in voltage or data.
- Use a scan tool to command the throttle (if safe) and observe motor current, commanded vs actual throttle position, and driver duty cycle. Note abnormal current spikes or out-of-range values.
- Measure motor coil resistance at the throttle body (unplugged). Compare to service spec; an open, shorted or out-of-spec reading indicates motor or internal wiring fault.
- Measure actual motor current under operation using a DC clamp meter on the motor supply lead while commanding throttle; compare to expected range.
- Inspect throttle plate and bore for contamination or mechanical binding. Clean per manufacturer procedure if restricted movement is found.
- If wiring and throttle body check good but current readings still abnormal, check for shorts to battery/ground in the control lines and verify PCM grounds and power feeds.
- If tests point to the throttle actuator assembly, replace the throttle body. After replacement, clear codes and perform required throttle relearn/initialization.
- If replacement does not clear the issue, suspect PCM/ECM driver failure and verify PCM power/ground and, if necessary, consult module testing/reprogramming procedures.
Likely causes
- Open or high-resistance motor coil or connector pin
- Shorted coil or driver transistor causing excessive current draw
- Corroded or pushed-out terminal at throttle body connector
- Low battery voltage under load causing abnormal current readings
- Carbon buildup or foreign object restricting throttle plate movement
- Intermittent wiring damage that changes resistance when the harness moves
Fault status
Status
DTC P2118 set when the PCM detects actuator motor current outside normal range or performance thresholds. May cause MIL illumination and force reduced power (limp) mode until the condition is resolved.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
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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
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Was this AI description helpful?
Your feedback helps improve AI descriptions.
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Code
P2118
MITSUBISHI
P — Powertrain
Throttle actuator motor current
Views:
UK: 8
EN: 53
RU: 19
AI status
Completed
Completed
100%
Causes
- Faulty electronic throttle actuator (motor) or internal driver
- Damaged wiring or poor connector contact to throttle actuator
- Short to battery or short to ground in motor control circuit
- Low battery or weak charging system affecting motor current
- Throttle plate binding, contamination, or mechanical obstruction
- PCM/ECM driver fault or internal failure
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine power / limp-home mode
- Poor or erratic idle, hesitation or stalling
- Little or no throttle response to accelerator pedal
- Possible whining or abnormal noise from throttle body area
- Other related throttle DTCs present
What to check
- Read freeze frame and all stored DTCs and note operating conditions
- Inspect battery state-of-charge and charging system voltage
- Visual inspection of throttle body connector, pins and harness for damage/corrosion
- Check fuses and relays for the throttle control circuit
- Scan tool: monitor commanded throttle position, actual throttle angle, and motor current/live data
- Backprobe motor supply and ground to verify proper voltage and continuity
Signal parameters
- Actuator motor current (amps)
- Motor supply voltage (V)
- Battery/charging voltage (V)
- Actuator coil resistance (ohms)
- Commanded throttle position (%) or degrees
- Measured throttle plate position (%) or degrees
Diagnostic algorithm
- Retrieve freeze frame and note ambient/battery/engine conditions. Record all related codes.
- Confirm battery voltage is within spec (typically ~12.4–14.8 V with engine running). Recharge or replace weak battery before further testing.
- Visually inspect throttle body connector and wiring for corrosion, bent pins, damaged insulation or pin push-out. Repair any damage.
- With key on (engine off), backprobe motor supply and ground. Verify proper supply voltage and a good ground. Wiggle harness and watch for intermittent changes in voltage or data.
- Use a scan tool to command the throttle (if safe) and observe motor current, commanded vs actual throttle position, and driver duty cycle. Note abnormal current spikes or out-of-range values.
- Measure motor coil resistance at the throttle body (unplugged). Compare to service spec; an open, shorted or out-of-spec reading indicates motor or internal wiring fault.
- Measure actual motor current under operation using a DC clamp meter on the motor supply lead while commanding throttle; compare to expected range.
- Inspect throttle plate and bore for contamination or mechanical binding. Clean per manufacturer procedure if restricted movement is found.
- If wiring and throttle body check good but current readings still abnormal, check for shorts to battery/ground in the control lines and verify PCM grounds and power feeds.
- If tests point to the throttle actuator assembly, replace the throttle body. After replacement, clear codes and perform required throttle relearn/initialization.
- If replacement does not clear the issue, suspect PCM/ECM driver failure and verify PCM power/ground and, if necessary, consult module testing/reprogramming procedures.
Likely causes
- Open or high-resistance motor coil or connector pin
- Shorted coil or driver transistor causing excessive current draw
- Corroded or pushed-out terminal at throttle body connector
- Low battery voltage under load causing abnormal current readings
- Carbon buildup or foreign object restricting throttle plate movement
- Intermittent wiring damage that changes resistance when the harness moves
Fault status
Status
DTC P2118 set when the PCM detects actuator motor current outside normal range or performance thresholds. May cause MIL illumination and force reduced power (limp) mode until the condition is resolved.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Your experience will help others
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Was this AI description helpful?
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