Code
P0116
Generic
P — Powertrain
Engine Coolant Temperature Sensor 1 Circuit Range/Performance
Views:
UK: 17
EN: 30
RU: 64
AI status
Completed
Completed
100%
Causes
- Faulty ECT sensor (open, shorted, or out of spec)
- Damaged, corroded or loose sensor connector
- Broken wiring, short to voltage or ground, or intermittent open in harness
- Incorrect/poor ground at sensor or PCM
- Low engine coolant level, air pocket, or thermostat stuck open/closed causing abnormal temps
- Contaminated sensor (oil/coolant deposits)
Symptoms
- Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated
- Incorrect coolant temperature reading on dash or scan tool (very high, very low, or fluctuating)
- Hard cold start or extended cranking time
- Poor idle control, rough running or drivability issues
- Reduced fuel economy or increased emissions
- Overheating or failure to reach normal operating temperature (thermostat related)
What to check
- Retrieve DTC freeze frame and live data (ECT value and PID) with a scan tool
- Compare ECT reading to ambient air temperature and engine warm-up behavior
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose pins
- Verify coolant level and inspect for air pockets; check thermostat operation
- Backprobe sensor connector and measure voltage and resistance at key temperatures
- Check for continuity between sensor ground and vehicle ground and between signal pin and PCM pin
Signal parameters
- Typical ECT sensor type: negative temperature coefficient (NTC) thermistor — resistance decreases as temperature increases
- Typical resistance examples (approximate): ~2–3 kΩ at ~20–25°C, ~100–300 Ω at 80–100°C; very high resistance (kΩs to tens of kΩ) when cold or open circuit
- Typical voltage output to PCM (with ~5 V reference): roughly 0.2–0.5 V when hot, up to ~4.5 V when cold (depends on vehicle/ECU pull-up configuration)
- PCM reference voltage commonly ≈5 V; expect stable reference, not intermittent or floating
Diagnostic algorithm
- Safety first: allow engine to cool before accessing coolant system.
- Read freeze frame and live data: note ambient temp, engine temp, and related PIDs. Confirm ECT value is implausible for conditions.
- Visual inspection: check sensor body, connector, wiring harness for damage, corrosion, contamination or coolant leaks. Repair or clean as needed.
- Check coolant level and thermostat operation. Top up coolant and bleed system if low or air suspected; rerun scan data.
- Measure sensor resistance off-vehicle with a calibrated thermometer: compare resistance to expected NTC chart for the sensor (if manufacturer chart available).
- Backprobe sensor connector on-vehicle: with ignition ON and engine cold/hot, measure sensor voltage to PCM reference and monitor while warming engine. Look for smooth change in value as temperature changes and for intermittent drops.
- Check for open/short: verify continuity from sensor signal pin to PCM pin and check for shorts to battery voltage or ground. Wiggle harness to reveal intermittent faults.
- If readings are incorrect and wiring/connector check good, replace ECT sensor and retest. Clear codes, perform drive cycle and confirm fault does not return.
- If replacement sensor does not correct issue, inspect PCM input circuit and grounds; consider professional bench/PCM testing or ECU replacement as last resort.
Likely causes
- Faulty or contaminated ECT sensor
- Open or short in sensor harness or connector (including poor ground)
- Low coolant level or trapped air causing wrong readings
- Faulty thermostat causing abnormal temperature behavior
- Corroded connector or bad pin at sensor or PCM
Fault status
Status
Engine Coolant Temperature Sensor 1 Circuit Range/Performance — PCM detected coolant temperature signal outside expected range or implausible behavior; fault recorded and MIL may be on.
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
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Workshop ManualYour experience will help others
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Code
P0116
GWM
P — Powertrain
- Invalid indicator / engine coolant temperature sensor not adjusted
Views:
UK: 3
EN: 7
RU: 12
AI status
Completed
Completed
100%
Causes
- Faulty ECT sensor (open, shorted, or out of spec)
- Damaged, corroded or loose sensor connector
- Broken wiring, short to voltage or ground, or intermittent open in harness
- Incorrect/poor ground at sensor or PCM
- Low engine coolant level, air pocket, or thermostat stuck open/closed causing abnormal temps
- Contaminated sensor (oil/coolant deposits)
Symptoms
- Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated
- Incorrect coolant temperature reading on dash or scan tool (very high, very low, or fluctuating)
- Hard cold start or extended cranking time
- Poor idle control, rough running or drivability issues
- Reduced fuel economy or increased emissions
- Overheating or failure to reach normal operating temperature (thermostat related)
What to check
- Retrieve DTC freeze frame and live data (ECT value and PID) with a scan tool
- Compare ECT reading to ambient air temperature and engine warm-up behavior
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose pins
- Verify coolant level and inspect for air pockets; check thermostat operation
- Backprobe sensor connector and measure voltage and resistance at key temperatures
- Check for continuity between sensor ground and vehicle ground and between signal pin and PCM pin
Signal parameters
- Typical ECT sensor type: negative temperature coefficient (NTC) thermistor — resistance decreases as temperature increases
- Typical resistance examples (approximate): ~2–3 kΩ at ~20–25°C, ~100–300 Ω at 80–100°C; very high resistance (kΩs to tens of kΩ) when cold or open circuit
- Typical voltage output to PCM (with ~5 V reference): roughly 0.2–0.5 V when hot, up to ~4.5 V when cold (depends on vehicle/ECU pull-up configuration)
- PCM reference voltage commonly ≈5 V; expect stable reference, not intermittent or floating
Diagnostic algorithm
- Safety first: allow engine to cool before accessing coolant system.
- Read freeze frame and live data: note ambient temp, engine temp, and related PIDs. Confirm ECT value is implausible for conditions.
- Visual inspection: check sensor body, connector, wiring harness for damage, corrosion, contamination or coolant leaks. Repair or clean as needed.
- Check coolant level and thermostat operation. Top up coolant and bleed system if low or air suspected; rerun scan data.
- Measure sensor resistance off-vehicle with a calibrated thermometer: compare resistance to expected NTC chart for the sensor (if manufacturer chart available).
- Backprobe sensor connector on-vehicle: with ignition ON and engine cold/hot, measure sensor voltage to PCM reference and monitor while warming engine. Look for smooth change in value as temperature changes and for intermittent drops.
- Check for open/short: verify continuity from sensor signal pin to PCM pin and check for shorts to battery voltage or ground. Wiggle harness to reveal intermittent faults.
- If readings are incorrect and wiring/connector check good, replace ECT sensor and retest. Clear codes, perform drive cycle and confirm fault does not return.
- If replacement sensor does not correct issue, inspect PCM input circuit and grounds; consider professional bench/PCM testing or ECU replacement as last resort.
Likely causes
- Faulty or contaminated ECT sensor
- Open or short in sensor harness or connector (including poor ground)
- Low coolant level or trapped air causing wrong readings
- Faulty thermostat causing abnormal temperature behavior
- Corroded connector or bad pin at sensor or PCM
Fault status
Status
Engine Coolant Temperature Sensor 1 Circuit Range/Performance — PCM detected coolant temperature signal outside expected range or implausible behavior; fault recorded and MIL may be on.
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
Similar codes
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Code
P0116
HUMMER
P — Powertrain
Engine Coolant Temperature (ECT) Sensor Performance
Views:
UK: 8
EN: 16
RU: 45
AI status
Completed
Completed
100%
Causes
- Faulty ECT sensor (open, shorted, or out of spec)
- Damaged, corroded or loose sensor connector
- Broken wiring, short to voltage or ground, or intermittent open in harness
- Incorrect/poor ground at sensor or PCM
- Low engine coolant level, air pocket, or thermostat stuck open/closed causing abnormal temps
- Contaminated sensor (oil/coolant deposits)
Symptoms
- Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated
- Incorrect coolant temperature reading on dash or scan tool (very high, very low, or fluctuating)
- Hard cold start or extended cranking time
- Poor idle control, rough running or drivability issues
- Reduced fuel economy or increased emissions
- Overheating or failure to reach normal operating temperature (thermostat related)
What to check
- Retrieve DTC freeze frame and live data (ECT value and PID) with a scan tool
- Compare ECT reading to ambient air temperature and engine warm-up behavior
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose pins
- Verify coolant level and inspect for air pockets; check thermostat operation
- Backprobe sensor connector and measure voltage and resistance at key temperatures
- Check for continuity between sensor ground and vehicle ground and between signal pin and PCM pin
Signal parameters
- Typical ECT sensor type: negative temperature coefficient (NTC) thermistor — resistance decreases as temperature increases
- Typical resistance examples (approximate): ~2–3 kΩ at ~20–25°C, ~100–300 Ω at 80–100°C; very high resistance (kΩs to tens of kΩ) when cold or open circuit
- Typical voltage output to PCM (with ~5 V reference): roughly 0.2–0.5 V when hot, up to ~4.5 V when cold (depends on vehicle/ECU pull-up configuration)
- PCM reference voltage commonly ≈5 V; expect stable reference, not intermittent or floating
Diagnostic algorithm
- Safety first: allow engine to cool before accessing coolant system.
- Read freeze frame and live data: note ambient temp, engine temp, and related PIDs. Confirm ECT value is implausible for conditions.
- Visual inspection: check sensor body, connector, wiring harness for damage, corrosion, contamination or coolant leaks. Repair or clean as needed.
- Check coolant level and thermostat operation. Top up coolant and bleed system if low or air suspected; rerun scan data.
- Measure sensor resistance off-vehicle with a calibrated thermometer: compare resistance to expected NTC chart for the sensor (if manufacturer chart available).
- Backprobe sensor connector on-vehicle: with ignition ON and engine cold/hot, measure sensor voltage to PCM reference and monitor while warming engine. Look for smooth change in value as temperature changes and for intermittent drops.
- Check for open/short: verify continuity from sensor signal pin to PCM pin and check for shorts to battery voltage or ground. Wiggle harness to reveal intermittent faults.
- If readings are incorrect and wiring/connector check good, replace ECT sensor and retest. Clear codes, perform drive cycle and confirm fault does not return.
- If replacement sensor does not correct issue, inspect PCM input circuit and grounds; consider professional bench/PCM testing or ECU replacement as last resort.
Likely causes
- Faulty or contaminated ECT sensor
- Open or short in sensor harness or connector (including poor ground)
- Low coolant level or trapped air causing wrong readings
- Faulty thermostat causing abnormal temperature behavior
- Corroded connector or bad pin at sensor or PCM
Fault status
Status
Engine Coolant Temperature Sensor 1 Circuit Range/Performance — PCM detected coolant temperature signal outside expected range or implausible behavior; fault recorded and MIL may be on.
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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Code
P0116
LAND ROVER
P — Powertrain
Engine Coolant Temperature Circuit Range/Performance Problem performance issue
Views:
UK: 5
EN: 11
RU: 40
AI status
Completed
Completed
100%
Causes
- Faulty ECT sensor (open, shorted, or out of spec)
- Damaged, corroded or loose sensor connector
- Broken wiring, short to voltage or ground, or intermittent open in harness
- Incorrect/poor ground at sensor or PCM
- Low engine coolant level, air pocket, or thermostat stuck open/closed causing abnormal temps
- Contaminated sensor (oil/coolant deposits)
Symptoms
- Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated
- Incorrect coolant temperature reading on dash or scan tool (very high, very low, or fluctuating)
- Hard cold start or extended cranking time
- Poor idle control, rough running or drivability issues
- Reduced fuel economy or increased emissions
- Overheating or failure to reach normal operating temperature (thermostat related)
What to check
- Retrieve DTC freeze frame and live data (ECT value and PID) with a scan tool
- Compare ECT reading to ambient air temperature and engine warm-up behavior
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose pins
- Verify coolant level and inspect for air pockets; check thermostat operation
- Backprobe sensor connector and measure voltage and resistance at key temperatures
- Check for continuity between sensor ground and vehicle ground and between signal pin and PCM pin
Signal parameters
- Typical ECT sensor type: negative temperature coefficient (NTC) thermistor — resistance decreases as temperature increases
- Typical resistance examples (approximate): ~2–3 kΩ at ~20–25°C, ~100–300 Ω at 80–100°C; very high resistance (kΩs to tens of kΩ) when cold or open circuit
- Typical voltage output to PCM (with ~5 V reference): roughly 0.2–0.5 V when hot, up to ~4.5 V when cold (depends on vehicle/ECU pull-up configuration)
- PCM reference voltage commonly ≈5 V; expect stable reference, not intermittent or floating
Diagnostic algorithm
- Safety first: allow engine to cool before accessing coolant system.
- Read freeze frame and live data: note ambient temp, engine temp, and related PIDs. Confirm ECT value is implausible for conditions.
- Visual inspection: check sensor body, connector, wiring harness for damage, corrosion, contamination or coolant leaks. Repair or clean as needed.
- Check coolant level and thermostat operation. Top up coolant and bleed system if low or air suspected; rerun scan data.
- Measure sensor resistance off-vehicle with a calibrated thermometer: compare resistance to expected NTC chart for the sensor (if manufacturer chart available).
- Backprobe sensor connector on-vehicle: with ignition ON and engine cold/hot, measure sensor voltage to PCM reference and monitor while warming engine. Look for smooth change in value as temperature changes and for intermittent drops.
- Check for open/short: verify continuity from sensor signal pin to PCM pin and check for shorts to battery voltage or ground. Wiggle harness to reveal intermittent faults.
- If readings are incorrect and wiring/connector check good, replace ECT sensor and retest. Clear codes, perform drive cycle and confirm fault does not return.
- If replacement sensor does not correct issue, inspect PCM input circuit and grounds; consider professional bench/PCM testing or ECU replacement as last resort.
Likely causes
- Faulty or contaminated ECT sensor
- Open or short in sensor harness or connector (including poor ground)
- Low coolant level or trapped air causing wrong readings
- Faulty thermostat causing abnormal temperature behavior
- Corroded connector or bad pin at sensor or PCM
Fault status
Status
Engine Coolant Temperature Sensor 1 Circuit Range/Performance — PCM detected coolant temperature signal outside expected range or implausible behavior; fault recorded and MIL may be on.
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop ManualLand Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop ManualLand Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop ManualYour experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
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Send to email
Code
P0116
MITSUBISHI
P — Powertrain
Engine coolant TEMP.sensor range
Views:
UK: 7
EN: 15
RU: 47
AI status
Completed
Completed
100%
Causes
- Faulty ECT sensor (open, shorted, or out of spec)
- Damaged, corroded or loose sensor connector
- Broken wiring, short to voltage or ground, or intermittent open in harness
- Incorrect/poor ground at sensor or PCM
- Low engine coolant level, air pocket, or thermostat stuck open/closed causing abnormal temps
- Contaminated sensor (oil/coolant deposits)
Symptoms
- Malfunction Indicator Lamp (MIL) or Check Engine Light illuminated
- Incorrect coolant temperature reading on dash or scan tool (very high, very low, or fluctuating)
- Hard cold start or extended cranking time
- Poor idle control, rough running or drivability issues
- Reduced fuel economy or increased emissions
- Overheating or failure to reach normal operating temperature (thermostat related)
What to check
- Retrieve DTC freeze frame and live data (ECT value and PID) with a scan tool
- Compare ECT reading to ambient air temperature and engine warm-up behavior
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose pins
- Verify coolant level and inspect for air pockets; check thermostat operation
- Backprobe sensor connector and measure voltage and resistance at key temperatures
- Check for continuity between sensor ground and vehicle ground and between signal pin and PCM pin
Signal parameters
- Typical ECT sensor type: negative temperature coefficient (NTC) thermistor — resistance decreases as temperature increases
- Typical resistance examples (approximate): ~2–3 kΩ at ~20–25°C, ~100–300 Ω at 80–100°C; very high resistance (kΩs to tens of kΩ) when cold or open circuit
- Typical voltage output to PCM (with ~5 V reference): roughly 0.2–0.5 V when hot, up to ~4.5 V when cold (depends on vehicle/ECU pull-up configuration)
- PCM reference voltage commonly ≈5 V; expect stable reference, not intermittent or floating
Diagnostic algorithm
- Safety first: allow engine to cool before accessing coolant system.
- Read freeze frame and live data: note ambient temp, engine temp, and related PIDs. Confirm ECT value is implausible for conditions.
- Visual inspection: check sensor body, connector, wiring harness for damage, corrosion, contamination or coolant leaks. Repair or clean as needed.
- Check coolant level and thermostat operation. Top up coolant and bleed system if low or air suspected; rerun scan data.
- Measure sensor resistance off-vehicle with a calibrated thermometer: compare resistance to expected NTC chart for the sensor (if manufacturer chart available).
- Backprobe sensor connector on-vehicle: with ignition ON and engine cold/hot, measure sensor voltage to PCM reference and monitor while warming engine. Look for smooth change in value as temperature changes and for intermittent drops.
- Check for open/short: verify continuity from sensor signal pin to PCM pin and check for shorts to battery voltage or ground. Wiggle harness to reveal intermittent faults.
- If readings are incorrect and wiring/connector check good, replace ECT sensor and retest. Clear codes, perform drive cycle and confirm fault does not return.
- If replacement sensor does not correct issue, inspect PCM input circuit and grounds; consider professional bench/PCM testing or ECU replacement as last resort.
Likely causes
- Faulty or contaminated ECT sensor
- Open or short in sensor harness or connector (including poor ground)
- Low coolant level or trapped air causing wrong readings
- Faulty thermostat causing abnormal temperature behavior
- Corroded connector or bad pin at sensor or PCM
Fault status
Status
Engine Coolant Temperature Sensor 1 Circuit Range/Performance — PCM detected coolant temperature signal outside expected range or implausible behavior; fault recorded and MIL may be on.
Repair difficulty: Medium
Diagnostic time: 0.5-2 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