Code
P0113
AUDI
P — Powertrain
Defective Intake Air Temperature Sensor, Dirty air filter, Defective Mass Air Flow Sensor, Faulty or corroded Intake Air Temperature Sensor wiring or connections
Views:
UK: 40
EN: 78
RU: 153
AI status
Completed
Completed
100%
Causes
- Faulty IAT sensor (thermistor failure)
- Shorted signal wire to 5V reference (high voltage on signal)
- Poor or corroded connector or wiring (intermittent/high resistance)
- Open or damaged ground for sensor or ECM
- Contaminated or flooded sensor (oil/water/soot)
- Related intake issues affecting sensor readings (very dirty air filter, defective MAF)
Symptoms
- Check Engine Light (MIL) illuminated
- Incorrect intake air temperature reported in live data (very high or stuck value)
- Cold/hot start driveability issues (rich/lean mixtures)
- Reduced fuel economy or rough idle
- Possible poor acceleration or stalling in some conditions
- Codes related to MAF or fuel trim may also be present
What to check
- Read and record freeze‑frame data and pending/current codes with an OBD‑II scanner
- View live data: IAT temperature and IAT sensor voltage while key ON and engine running
- Inspect IAT sensor and connector for corrosion, contamination, bent pins, or water ingress
- Check intake air path: air filter condition and MAF sensor condition/connection
- Backprobe the IAT signal wire to measure voltage vs. ground with ignition ON (engine off)
- Measure reference voltage at the connector (should be close to 5V on many vehicles) and check sensor ground continuity
Signal parameters
- IAT signal expected range: ~0.1–4.7 V (varies by vehicle). P0113 is set when signal is abnormally high (near reference/5V) or above manufacturer threshold (~4.8–5.0 V).
- Reference voltage to sensor: ~5 V supply (verify exact vehicle spec).
- Sensor type: NTC thermistor — resistance decreases as temperature increases (consult OEM table for exact Ω vs °C).
- Typical ambient signal at ~20–25 °C often around mid‑range voltage (varies by sensor design)
Diagnostic algorithm
- Connect an OBD‑II scanner, confirm P0113 and note freeze frame/live data (IAT voltage/temperature, related MAF/trims).
- Visually inspect the IAT sensor, wiring, and connector for damage, corrosion, oil, water, or loose pins. Replace or clean connector as needed.
- Inspect intake air filter and MAF; replace dirty filter and clean/verify MAF operation if suspect.
- With ignition ON (engine OFF), backprobe the connector: verify 5V reference present on reference wire, good ground on ground wire, and measure IAT signal voltage. A signal near 5V indicates a high input condition.
- If 5V reference is present and signal is high, disconnect the IAT sensor and measure open‑circuit voltage at the harness end. If voltage remains high, suspect wiring short to reference or ECM issue. If voltage drops/changes, test sensor directly off vehicle.
- Remove the sensor and measure resistance at a known ambient temperature; compare to OEM resistance/temperature chart (NTC behavior). Replace sensor if resistance is out of expected range or not changing with temperature.
- Check continuity/shorts between the IAT signal wire and other circuits (5V reference, ignition, battery) and to ground. Repair wiring or connectors as required.
- After repairs or replacement, clear codes, retest engine and monitor live data to confirm correct IAT voltage/temperature and that the code does not return.
- If wiring and sensor check good but problem persists, consider ECM input circuit fault and consult manufacturer resources.
Likely causes
- Corroded/loose IAT connector pins causing high/erratic voltage
- Short from IAT signal wire to reference voltage or another live circuit
- Failed IAT thermistor inside sensor reading out of range
- Damaged wiring harness where it rubs/chafes and contacts a 12V/5V feed
- MAF sensor fault or severely restricted air filter changing intake conditions and confusing diagnostics
Fault status
Status
P0113 - Intake Air Temperature (IAT) Sensor Circuit High Input detected (Audi)
Repair difficulty: Medium
Diagnostic time: 0.5–1.5 hours
Similar codes
Workshop Manuals
Repair manuals for AUDI
11
6-speed manual gearbox 0B1, front-wheel drive — Workshop Manual (Edition 05.2014)
Workshop ManualAudi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop ManualAUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
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Workshop ManualYour experience will help others
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Code
P0113
Generic
P — Powertrain
Intake Air Temperature Sensor 1 Circuit High Bank 1
Views:
UK: 39
EN: 96
RU: 115
AI status
Completed
Completed
100%
Causes
- Faulty IAT sensor (thermistor failure)
- Shorted signal wire to 5V reference (high voltage on signal)
- Poor or corroded connector or wiring (intermittent/high resistance)
- Open or damaged ground for sensor or ECM
- Contaminated or flooded sensor (oil/water/soot)
- Related intake issues affecting sensor readings (very dirty air filter, defective MAF)
Symptoms
- Check Engine Light (MIL) illuminated
- Incorrect intake air temperature reported in live data (very high or stuck value)
- Cold/hot start driveability issues (rich/lean mixtures)
- Reduced fuel economy or rough idle
- Possible poor acceleration or stalling in some conditions
- Codes related to MAF or fuel trim may also be present
What to check
- Read and record freeze‑frame data and pending/current codes with an OBD‑II scanner
- View live data: IAT temperature and IAT sensor voltage while key ON and engine running
- Inspect IAT sensor and connector for corrosion, contamination, bent pins, or water ingress
- Check intake air path: air filter condition and MAF sensor condition/connection
- Backprobe the IAT signal wire to measure voltage vs. ground with ignition ON (engine off)
- Measure reference voltage at the connector (should be close to 5V on many vehicles) and check sensor ground continuity
Signal parameters
- IAT signal expected range: ~0.1–4.7 V (varies by vehicle). P0113 is set when signal is abnormally high (near reference/5V) or above manufacturer threshold (~4.8–5.0 V).
- Reference voltage to sensor: ~5 V supply (verify exact vehicle spec).
- Sensor type: NTC thermistor — resistance decreases as temperature increases (consult OEM table for exact Ω vs °C).
- Typical ambient signal at ~20–25 °C often around mid‑range voltage (varies by sensor design)
Diagnostic algorithm
- Connect an OBD‑II scanner, confirm P0113 and note freeze frame/live data (IAT voltage/temperature, related MAF/trims).
- Visually inspect the IAT sensor, wiring, and connector for damage, corrosion, oil, water, or loose pins. Replace or clean connector as needed.
- Inspect intake air filter and MAF; replace dirty filter and clean/verify MAF operation if suspect.
- With ignition ON (engine OFF), backprobe the connector: verify 5V reference present on reference wire, good ground on ground wire, and measure IAT signal voltage. A signal near 5V indicates a high input condition.
- If 5V reference is present and signal is high, disconnect the IAT sensor and measure open‑circuit voltage at the harness end. If voltage remains high, suspect wiring short to reference or ECM issue. If voltage drops/changes, test sensor directly off vehicle.
- Remove the sensor and measure resistance at a known ambient temperature; compare to OEM resistance/temperature chart (NTC behavior). Replace sensor if resistance is out of expected range or not changing with temperature.
- Check continuity/shorts between the IAT signal wire and other circuits (5V reference, ignition, battery) and to ground. Repair wiring or connectors as required.
- After repairs or replacement, clear codes, retest engine and monitor live data to confirm correct IAT voltage/temperature and that the code does not return.
- If wiring and sensor check good but problem persists, consider ECM input circuit fault and consult manufacturer resources.
Likely causes
- Corroded/loose IAT connector pins causing high/erratic voltage
- Short from IAT signal wire to reference voltage or another live circuit
- Failed IAT thermistor inside sensor reading out of range
- Damaged wiring harness where it rubs/chafes and contacts a 12V/5V feed
- MAF sensor fault or severely restricted air filter changing intake conditions and confusing diagnostics
Fault status
Status
P0113 - Intake Air Temperature (IAT) Sensor Circuit High Input detected (Audi)
Repair difficulty: Medium
Diagnostic time: 0.5–1.5 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 ManualAudi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop ManualAUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
Workshop ManualAudi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
Workshop ManualAudi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
Workshop ManualAudi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
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Workshop ManualAudi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop ManualAudi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop ManualAudi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
Workshop ManualAudi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop ManualLAND 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
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Code
P0113
GWM
P — Powertrain
- High intake air temperature sensor
Views:
UK: 5
EN: 24
RU: 23
AI status
Completed
Completed
100%
Causes
- Faulty IAT sensor (thermistor failure)
- Shorted signal wire to 5V reference (high voltage on signal)
- Poor or corroded connector or wiring (intermittent/high resistance)
- Open or damaged ground for sensor or ECM
- Contaminated or flooded sensor (oil/water/soot)
- Related intake issues affecting sensor readings (very dirty air filter, defective MAF)
Symptoms
- Check Engine Light (MIL) illuminated
- Incorrect intake air temperature reported in live data (very high or stuck value)
- Cold/hot start driveability issues (rich/lean mixtures)
- Reduced fuel economy or rough idle
- Possible poor acceleration or stalling in some conditions
- Codes related to MAF or fuel trim may also be present
What to check
- Read and record freeze‑frame data and pending/current codes with an OBD‑II scanner
- View live data: IAT temperature and IAT sensor voltage while key ON and engine running
- Inspect IAT sensor and connector for corrosion, contamination, bent pins, or water ingress
- Check intake air path: air filter condition and MAF sensor condition/connection
- Backprobe the IAT signal wire to measure voltage vs. ground with ignition ON (engine off)
- Measure reference voltage at the connector (should be close to 5V on many vehicles) and check sensor ground continuity
Signal parameters
- IAT signal expected range: ~0.1–4.7 V (varies by vehicle). P0113 is set when signal is abnormally high (near reference/5V) or above manufacturer threshold (~4.8–5.0 V).
- Reference voltage to sensor: ~5 V supply (verify exact vehicle spec).
- Sensor type: NTC thermistor — resistance decreases as temperature increases (consult OEM table for exact Ω vs °C).
- Typical ambient signal at ~20–25 °C often around mid‑range voltage (varies by sensor design)
Diagnostic algorithm
- Connect an OBD‑II scanner, confirm P0113 and note freeze frame/live data (IAT voltage/temperature, related MAF/trims).
- Visually inspect the IAT sensor, wiring, and connector for damage, corrosion, oil, water, or loose pins. Replace or clean connector as needed.
- Inspect intake air filter and MAF; replace dirty filter and clean/verify MAF operation if suspect.
- With ignition ON (engine OFF), backprobe the connector: verify 5V reference present on reference wire, good ground on ground wire, and measure IAT signal voltage. A signal near 5V indicates a high input condition.
- If 5V reference is present and signal is high, disconnect the IAT sensor and measure open‑circuit voltage at the harness end. If voltage remains high, suspect wiring short to reference or ECM issue. If voltage drops/changes, test sensor directly off vehicle.
- Remove the sensor and measure resistance at a known ambient temperature; compare to OEM resistance/temperature chart (NTC behavior). Replace sensor if resistance is out of expected range or not changing with temperature.
- Check continuity/shorts between the IAT signal wire and other circuits (5V reference, ignition, battery) and to ground. Repair wiring or connectors as required.
- After repairs or replacement, clear codes, retest engine and monitor live data to confirm correct IAT voltage/temperature and that the code does not return.
- If wiring and sensor check good but problem persists, consider ECM input circuit fault and consult manufacturer resources.
Likely causes
- Corroded/loose IAT connector pins causing high/erratic voltage
- Short from IAT signal wire to reference voltage or another live circuit
- Failed IAT thermistor inside sensor reading out of range
- Damaged wiring harness where it rubs/chafes and contacts a 12V/5V feed
- MAF sensor fault or severely restricted air filter changing intake conditions and confusing diagnostics
Fault status
Status
P0113 - Intake Air Temperature (IAT) Sensor Circuit High Input detected (Audi)
Repair difficulty: Medium
Diagnostic time: 0.5–1.5 hours
Similar codes
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Code
P0113
HUMMER
P — Powertrain
Intake Air Temperature (IAT) Sensor Circuit High Voltage
Views:
UK: 17
EN: 45
RU: 87
AI status
Completed
Completed
100%
Causes
- Faulty IAT sensor (thermistor failure)
- Shorted signal wire to 5V reference (high voltage on signal)
- Poor or corroded connector or wiring (intermittent/high resistance)
- Open or damaged ground for sensor or ECM
- Contaminated or flooded sensor (oil/water/soot)
- Related intake issues affecting sensor readings (very dirty air filter, defective MAF)
Symptoms
- Check Engine Light (MIL) illuminated
- Incorrect intake air temperature reported in live data (very high or stuck value)
- Cold/hot start driveability issues (rich/lean mixtures)
- Reduced fuel economy or rough idle
- Possible poor acceleration or stalling in some conditions
- Codes related to MAF or fuel trim may also be present
What to check
- Read and record freeze‑frame data and pending/current codes with an OBD‑II scanner
- View live data: IAT temperature and IAT sensor voltage while key ON and engine running
- Inspect IAT sensor and connector for corrosion, contamination, bent pins, or water ingress
- Check intake air path: air filter condition and MAF sensor condition/connection
- Backprobe the IAT signal wire to measure voltage vs. ground with ignition ON (engine off)
- Measure reference voltage at the connector (should be close to 5V on many vehicles) and check sensor ground continuity
Signal parameters
- IAT signal expected range: ~0.1–4.7 V (varies by vehicle). P0113 is set when signal is abnormally high (near reference/5V) or above manufacturer threshold (~4.8–5.0 V).
- Reference voltage to sensor: ~5 V supply (verify exact vehicle spec).
- Sensor type: NTC thermistor — resistance decreases as temperature increases (consult OEM table for exact Ω vs °C).
- Typical ambient signal at ~20–25 °C often around mid‑range voltage (varies by sensor design)
Diagnostic algorithm
- Connect an OBD‑II scanner, confirm P0113 and note freeze frame/live data (IAT voltage/temperature, related MAF/trims).
- Visually inspect the IAT sensor, wiring, and connector for damage, corrosion, oil, water, or loose pins. Replace or clean connector as needed.
- Inspect intake air filter and MAF; replace dirty filter and clean/verify MAF operation if suspect.
- With ignition ON (engine OFF), backprobe the connector: verify 5V reference present on reference wire, good ground on ground wire, and measure IAT signal voltage. A signal near 5V indicates a high input condition.
- If 5V reference is present and signal is high, disconnect the IAT sensor and measure open‑circuit voltage at the harness end. If voltage remains high, suspect wiring short to reference or ECM issue. If voltage drops/changes, test sensor directly off vehicle.
- Remove the sensor and measure resistance at a known ambient temperature; compare to OEM resistance/temperature chart (NTC behavior). Replace sensor if resistance is out of expected range or not changing with temperature.
- Check continuity/shorts between the IAT signal wire and other circuits (5V reference, ignition, battery) and to ground. Repair wiring or connectors as required.
- After repairs or replacement, clear codes, retest engine and monitor live data to confirm correct IAT voltage/temperature and that the code does not return.
- If wiring and sensor check good but problem persists, consider ECM input circuit fault and consult manufacturer resources.
Likely causes
- Corroded/loose IAT connector pins causing high/erratic voltage
- Short from IAT signal wire to reference voltage or another live circuit
- Failed IAT thermistor inside sensor reading out of range
- Damaged wiring harness where it rubs/chafes and contacts a 12V/5V feed
- MAF sensor fault or severely restricted air filter changing intake conditions and confusing diagnostics
Fault status
Status
P0113 - Intake Air Temperature (IAT) Sensor Circuit High Input detected (Audi)
Repair difficulty: Medium
Diagnostic time: 0.5–1.5 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
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Send to email
Code
P0113
ISUZU
P — Powertrain
Intake Air Temperature Sensor Circuit High
Views:
UK: 24
EN: 63
RU: 95
AI status
Completed
Completed
100%
Causes
- Faulty IAT sensor (thermistor failure)
- Shorted signal wire to 5V reference (high voltage on signal)
- Poor or corroded connector or wiring (intermittent/high resistance)
- Open or damaged ground for sensor or ECM
- Contaminated or flooded sensor (oil/water/soot)
- Related intake issues affecting sensor readings (very dirty air filter, defective MAF)
Symptoms
- Check Engine Light (MIL) illuminated
- Incorrect intake air temperature reported in live data (very high or stuck value)
- Cold/hot start driveability issues (rich/lean mixtures)
- Reduced fuel economy or rough idle
- Possible poor acceleration or stalling in some conditions
- Codes related to MAF or fuel trim may also be present
What to check
- Read and record freeze‑frame data and pending/current codes with an OBD‑II scanner
- View live data: IAT temperature and IAT sensor voltage while key ON and engine running
- Inspect IAT sensor and connector for corrosion, contamination, bent pins, or water ingress
- Check intake air path: air filter condition and MAF sensor condition/connection
- Backprobe the IAT signal wire to measure voltage vs. ground with ignition ON (engine off)
- Measure reference voltage at the connector (should be close to 5V on many vehicles) and check sensor ground continuity
Signal parameters
- IAT signal expected range: ~0.1–4.7 V (varies by vehicle). P0113 is set when signal is abnormally high (near reference/5V) or above manufacturer threshold (~4.8–5.0 V).
- Reference voltage to sensor: ~5 V supply (verify exact vehicle spec).
- Sensor type: NTC thermistor — resistance decreases as temperature increases (consult OEM table for exact Ω vs °C).
- Typical ambient signal at ~20–25 °C often around mid‑range voltage (varies by sensor design)
Diagnostic algorithm
- Connect an OBD‑II scanner, confirm P0113 and note freeze frame/live data (IAT voltage/temperature, related MAF/trims).
- Visually inspect the IAT sensor, wiring, and connector for damage, corrosion, oil, water, or loose pins. Replace or clean connector as needed.
- Inspect intake air filter and MAF; replace dirty filter and clean/verify MAF operation if suspect.
- With ignition ON (engine OFF), backprobe the connector: verify 5V reference present on reference wire, good ground on ground wire, and measure IAT signal voltage. A signal near 5V indicates a high input condition.
- If 5V reference is present and signal is high, disconnect the IAT sensor and measure open‑circuit voltage at the harness end. If voltage remains high, suspect wiring short to reference or ECM issue. If voltage drops/changes, test sensor directly off vehicle.
- Remove the sensor and measure resistance at a known ambient temperature; compare to OEM resistance/temperature chart (NTC behavior). Replace sensor if resistance is out of expected range or not changing with temperature.
- Check continuity/shorts between the IAT signal wire and other circuits (5V reference, ignition, battery) and to ground. Repair wiring or connectors as required.
- After repairs or replacement, clear codes, retest engine and monitor live data to confirm correct IAT voltage/temperature and that the code does not return.
- If wiring and sensor check good but problem persists, consider ECM input circuit fault and consult manufacturer resources.
Likely causes
- Corroded/loose IAT connector pins causing high/erratic voltage
- Short from IAT signal wire to reference voltage or another live circuit
- Failed IAT thermistor inside sensor reading out of range
- Damaged wiring harness where it rubs/chafes and contacts a 12V/5V feed
- MAF sensor fault or severely restricted air filter changing intake conditions and confusing diagnostics
Fault status
Status
P0113 - Intake Air Temperature (IAT) Sensor Circuit High Input detected (Audi)
Repair difficulty: Medium
Diagnostic time: 0.5–1.5 hours
Similar codes
Your experience will help others
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Was this AI description helpful?
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👍 Like
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Send to email
Code
P0113
LAND ROVER
P — Powertrain
Intake Air Temperature Circuit High Input
Views:
UK: 11
EN: 32
RU: 71
AI status
Completed
Completed
100%
Causes
- Faulty IAT sensor (thermistor failure)
- Shorted signal wire to 5V reference (high voltage on signal)
- Poor or corroded connector or wiring (intermittent/high resistance)
- Open or damaged ground for sensor or ECM
- Contaminated or flooded sensor (oil/water/soot)
- Related intake issues affecting sensor readings (very dirty air filter, defective MAF)
Symptoms
- Check Engine Light (MIL) illuminated
- Incorrect intake air temperature reported in live data (very high or stuck value)
- Cold/hot start driveability issues (rich/lean mixtures)
- Reduced fuel economy or rough idle
- Possible poor acceleration or stalling in some conditions
- Codes related to MAF or fuel trim may also be present
What to check
- Read and record freeze‑frame data and pending/current codes with an OBD‑II scanner
- View live data: IAT temperature and IAT sensor voltage while key ON and engine running
- Inspect IAT sensor and connector for corrosion, contamination, bent pins, or water ingress
- Check intake air path: air filter condition and MAF sensor condition/connection
- Backprobe the IAT signal wire to measure voltage vs. ground with ignition ON (engine off)
- Measure reference voltage at the connector (should be close to 5V on many vehicles) and check sensor ground continuity
Signal parameters
- IAT signal expected range: ~0.1–4.7 V (varies by vehicle). P0113 is set when signal is abnormally high (near reference/5V) or above manufacturer threshold (~4.8–5.0 V).
- Reference voltage to sensor: ~5 V supply (verify exact vehicle spec).
- Sensor type: NTC thermistor — resistance decreases as temperature increases (consult OEM table for exact Ω vs °C).
- Typical ambient signal at ~20–25 °C often around mid‑range voltage (varies by sensor design)
Diagnostic algorithm
- Connect an OBD‑II scanner, confirm P0113 and note freeze frame/live data (IAT voltage/temperature, related MAF/trims).
- Visually inspect the IAT sensor, wiring, and connector for damage, corrosion, oil, water, or loose pins. Replace or clean connector as needed.
- Inspect intake air filter and MAF; replace dirty filter and clean/verify MAF operation if suspect.
- With ignition ON (engine OFF), backprobe the connector: verify 5V reference present on reference wire, good ground on ground wire, and measure IAT signal voltage. A signal near 5V indicates a high input condition.
- If 5V reference is present and signal is high, disconnect the IAT sensor and measure open‑circuit voltage at the harness end. If voltage remains high, suspect wiring short to reference or ECM issue. If voltage drops/changes, test sensor directly off vehicle.
- Remove the sensor and measure resistance at a known ambient temperature; compare to OEM resistance/temperature chart (NTC behavior). Replace sensor if resistance is out of expected range or not changing with temperature.
- Check continuity/shorts between the IAT signal wire and other circuits (5V reference, ignition, battery) and to ground. Repair wiring or connectors as required.
- After repairs or replacement, clear codes, retest engine and monitor live data to confirm correct IAT voltage/temperature and that the code does not return.
- If wiring and sensor check good but problem persists, consider ECM input circuit fault and consult manufacturer resources.
Likely causes
- Corroded/loose IAT connector pins causing high/erratic voltage
- Short from IAT signal wire to reference voltage or another live circuit
- Failed IAT thermistor inside sensor reading out of range
- Damaged wiring harness where it rubs/chafes and contacts a 12V/5V feed
- MAF sensor fault or severely restricted air filter changing intake conditions and confusing diagnostics
Fault status
Status
P0113 - Intake Air Temperature (IAT) Sensor Circuit High Input detected (Audi)
Repair difficulty: Medium
Diagnostic time: 0.5–1.5 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?
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👍 Like
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0
Send to email
Code
P0113
MITSUBISHI
P — Powertrain
Intake air temperature SNS.high
Views:
UK: 16
EN: 46
RU: 90
AI status
Completed
Completed
100%
Causes
- Faulty IAT sensor (thermistor failure)
- Shorted signal wire to 5V reference (high voltage on signal)
- Poor or corroded connector or wiring (intermittent/high resistance)
- Open or damaged ground for sensor or ECM
- Contaminated or flooded sensor (oil/water/soot)
- Related intake issues affecting sensor readings (very dirty air filter, defective MAF)
Symptoms
- Check Engine Light (MIL) illuminated
- Incorrect intake air temperature reported in live data (very high or stuck value)
- Cold/hot start driveability issues (rich/lean mixtures)
- Reduced fuel economy or rough idle
- Possible poor acceleration or stalling in some conditions
- Codes related to MAF or fuel trim may also be present
What to check
- Read and record freeze‑frame data and pending/current codes with an OBD‑II scanner
- View live data: IAT temperature and IAT sensor voltage while key ON and engine running
- Inspect IAT sensor and connector for corrosion, contamination, bent pins, or water ingress
- Check intake air path: air filter condition and MAF sensor condition/connection
- Backprobe the IAT signal wire to measure voltage vs. ground with ignition ON (engine off)
- Measure reference voltage at the connector (should be close to 5V on many vehicles) and check sensor ground continuity
Signal parameters
- IAT signal expected range: ~0.1–4.7 V (varies by vehicle). P0113 is set when signal is abnormally high (near reference/5V) or above manufacturer threshold (~4.8–5.0 V).
- Reference voltage to sensor: ~5 V supply (verify exact vehicle spec).
- Sensor type: NTC thermistor — resistance decreases as temperature increases (consult OEM table for exact Ω vs °C).
- Typical ambient signal at ~20–25 °C often around mid‑range voltage (varies by sensor design)
Diagnostic algorithm
- Connect an OBD‑II scanner, confirm P0113 and note freeze frame/live data (IAT voltage/temperature, related MAF/trims).
- Visually inspect the IAT sensor, wiring, and connector for damage, corrosion, oil, water, or loose pins. Replace or clean connector as needed.
- Inspect intake air filter and MAF; replace dirty filter and clean/verify MAF operation if suspect.
- With ignition ON (engine OFF), backprobe the connector: verify 5V reference present on reference wire, good ground on ground wire, and measure IAT signal voltage. A signal near 5V indicates a high input condition.
- If 5V reference is present and signal is high, disconnect the IAT sensor and measure open‑circuit voltage at the harness end. If voltage remains high, suspect wiring short to reference or ECM issue. If voltage drops/changes, test sensor directly off vehicle.
- Remove the sensor and measure resistance at a known ambient temperature; compare to OEM resistance/temperature chart (NTC behavior). Replace sensor if resistance is out of expected range or not changing with temperature.
- Check continuity/shorts between the IAT signal wire and other circuits (5V reference, ignition, battery) and to ground. Repair wiring or connectors as required.
- After repairs or replacement, clear codes, retest engine and monitor live data to confirm correct IAT voltage/temperature and that the code does not return.
- If wiring and sensor check good but problem persists, consider ECM input circuit fault and consult manufacturer resources.
Likely causes
- Corroded/loose IAT connector pins causing high/erratic voltage
- Short from IAT signal wire to reference voltage or another live circuit
- Failed IAT thermistor inside sensor reading out of range
- Damaged wiring harness where it rubs/chafes and contacts a 12V/5V feed
- MAF sensor fault or severely restricted air filter changing intake conditions and confusing diagnostics
Fault status
Status
P0113 - Intake Air Temperature (IAT) Sensor Circuit High Input detected (Audi)
Repair difficulty: Medium
Diagnostic time: 0.5–1.5 hours
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