P0113 Code: Chevrolet Cruze (2016-2019) - Causes, Symptoms & Fixes

P0113 Diagnostic Guide for 2016-2019 Chevrolet Cruze
Code summary: P0113 – Intake Air Temperature Sensor Circuit High Input

Important data note (per provided data): No recalls found in NHTSA database for this make/model/year/issue. No NHTSA owner complaints recorded for this exact combination. This guide uses general automotive knowledge for the technical reasoning, and explains data limitations upfront.

CODE MEANING AND SEVERITY

• What the code means: P0113 indicates the PCM (engine control module) is seeing an abnormally high voltage/input from the Intake Air Temperature (IAT) sensor circuit. In many systems the IAT sensor is a 5V reference device that changes resistance with temperature; a high input generally means the PCM is reading a temperature that is unrealistically high or the sensor/wiring is causing an elevated signal.
• Typical symptoms you might notice:
  • MIL (Check Engine Light) on
  • Idle instability or rough idle
  • Poor or inconsistent acceleration
  • Reduced or erratic fuel economy
  • Possible misfires or hesitation, especially in cold starts or during rapid throttle changes
• Severity: Moderate. If the PCM continuously adapts to a false hot IAT reading, fuel trims can become inconsistent, potentially affecting drivability and emissions. A persistent P0113 should be diagnosed and corrected to prevent leaning/rich conditions and catalyst impact.

COMMON CAUSES ON CHEVROLET CRUZE

• Faulty IAT sensor: Sensor itself is failing and reporting abnormally high temperature.
• Poor or corroded IAT sensor electrical connector or wiring: Loose connector, damaged insulation, frayed wires, or corrosion causing high input readings.
• Wiring harness or PCM side issues: Wire harness rubbing on components, shorts to 5V or ground, or PCM input problems.
• Sensor circuit faults that aren’t the IAT itself: In some configurations the IAT circuit is shared or influenced by the MAF/MAP sensor circuits or the intake plumbing.
• Vacuum leaks or intake duct issues are less direct causes for P0113, but severe air leaks can confuse intake sensing and may co-occur with related sensor faults.
• External conditions: Extreme ambient temps causing sensor to read out of expected range if the sensor is marginal; environmental factors can make a marginal sensor fail a self-check.

SYMPTOMS SPECIFIC TO P0113 ON A 2016-2019 Cruze

• MIL illuminated with P0113 stored
• IAT reading shown as abnormally high on scan tool (relative to ambient)
• Engine runs lean/rich indications via fuel trims (if available on your tool)
• Noticeable fuel economy drop or inconsistent performance, especially after startup or during light-throttle driving
• In some cases, no obvious symptoms aside from the check engine light

DIAGNOSTIC STEPS

Note: Perform basic diagnostic steps first. Use a good quality scan tool and, when appropriate, a multimeter.

A. Confirm the code and data

• Read codes and freeze frame data. Note the IAT value reported by the PCM and the ambient air temperature if available.
• Confirm there isn’t a related code (e.g., P0112 for IAT low input, P0101/P0102/P0103 for MAF/airflow issues, P0171/P0174 for lean/rich conditions).

B. Visual inspection

• Inspect the IAT sensor and its connector for obvious damage, corrosion, moisture, or dirt.
• Inspect the wiring harness for melted insulation, chafed wires, or loose grounds.
• Check the connector latch; reseat firmly if needed.
• Inspect ambient air intake ducting for cracks or leaks that could affect readings (even though leaks typically affect MAF readings, a loose/dirty IAT connection is a common culprit).

C. Verify power, ground, and reference

• With ignition ON (engine OFF), test the IAT sensor connector pins using a DMM:
  • Verify reference voltage (often 5V) at the IAT signal pin relative to a good engine ground.
  • Verify a solid ground on the corresponding ground pin.
• If reference or ground is missing or erratic, trace the wiring to the PCM and repair/repair as needed.

D. Test the IAT sensor

• Remove the sensor (if accessible) and inspect for contamination or damage.
• Measure resistance of the IAT sensor across its terminals at room temperature (approx 20–25°C). Most IAT sensors in modern engines are NTC thermistors (commonly around 2k–10k ohms at room temp depending on design). Compare readings to OEM specifications for your engine, or compare to a known-good sensor if available.
• Reinstall or substitute with a known-good sensor to verify behavior.
• If resistance at room temperature is clearly out of spec or the reading on the scan tool remains abnormally high while the engine is at or near ambient temperature, the sensor is likely faulty and should be replaced.

E. Check sensor signal with engine running

• With ignition ON, engine OFF, measure the IAT signal voltage from the PCM side (if the tool provides this) or monitor through the scan tool. Then start the engine and observe how the IAT reading changes with temperature.
• A healthy sensor should show the reading decreasing as the intake air cools down after a cold start and increasing with heat; a stuck-at-high reading indicates a defective sensor or wiring issue.

F. Check for short to 5V or ground

• With the sensor removed (or by using a backprobe technique), check for a short to 5V or ground on the signal line. A short to 5V can cause a high-reading fault, while a short to ground may cause a low input fault (P0112). If you find a short, repair/replace wiring or harness as needed.

G. Check for related system interactions

• If the IAT appears fine, consider checking the MAF or MAP sensor, hoses, and intake plenum for faults that could influence the PCM’s interpretation of air quantity and temperature.
• Verify there are no emissions-related or fueling faults that might compound the diagnostic picture.

H. Repairs and retesting

• Replace IAT sensor if defective or out of spec (best practice to replace with the correct OEM sensor).
• Repair or replace any damaged wiring or connectors.
• Re-run the diagnostic test to confirm that P0113 clears and no new codes appear.
• Clear codes and take a road test to verify normal operation and fuel trims.

RELATED CODES

• P0112: Intake Air Temperature Sensor Circuit Low Input
• P0101/P0102/P0103: Mass Air Flow (MAF) Sensor Circuit issues (if the MAF is involved in the signal chain or if the readings suggest air measurement problems)
• P0171/P0174: System Too Lean (P0113 can coexist with lean conditions if fuel trims respond to the faulty IAT)
• P0117: Intake Air Temperature Sensor Circuit Low Input (in some databases represents a low input; similar diagnosis path with opposite symptom)

REPAIR OPTIONS AND COSTS (2025 PRICES)

Prices are typical ranges based on common Cruze repair costs; actual prices vary by market, shop, and part availability.

A. IAT sensor replacement

• Parts: $15–$40
• Labor: $40–$120
• Typical total: $55–$160
  Notes: This is the most common fix when the sensor is at fault. It’s usually a straightforward replacement with modest labor time.

B. Wiring/connector repair

• Parts: $0–$20 (grease or connector replacement if separate)
• Labor: $60–$180 (depending on access and extent of wiring repair)
• Typical total: $60–$200
  Notes: If corrosion or damaged insulation is found, replacing the connector or repairing harness sections is needed. Price scales with complexity.

C. Sensor harness replacement or loom repair

• Parts: $20–$100
• Labor: $80–$200
• Typical total: $100–$300
  Notes: If consecutive wiring damage is extensive, harness replacement can become more involved.

D. PCM/ECM replacement (rare)

• Parts: $200–$600 (used/aftermarket) or higher for new OEM
• Labor: $200–$500
• Typical total: $400–$1,100+
  Notes: Only if PCM input circuits are proven faulty after thorough testing; uncommon for P0113 alone.

E. Other related repairs

• Intake duct/coupling replacement (if leaks are found): $20–$100 in parts; $50–$150 labor
• Cleaning connectors and applying dielectric grease (low-cost preventive fix): $0–$20 parts; labor if done by user, otherwise included in service

DIY VS PROFESSIONAL

• DIY-friendly aspects:
  • Visual inspection of connectors and sensor wiring
  • Basic multimeter tests for voltage/ground
  • Sensor replacement (if comfortable with working around the intake system)
  • Cleaning and reseating connectors; applying dielectric grease
• When to seek a professional:
  • Ambiguity about the electrical circuit (PCM-side fault or complex harness issue)
  • Inconsistent readings or multiple related codes
  • Difficulty accessing the IAT sensor on your Cruze model (engine variant affects access)
  • You don’t own a multimeter or scan tool with live sensor data
• Safety considerations:
  • Disconnect battery when performing electrical inspections around the PCM and sensor areas as needed
  • Avoid inhaling fumes when working near the air intake system
  • Ensure the engine is cool before handling intake components

PREVENTION

• Regularly inspect the IAT sensor and its wiring for signs of wear, moisture intrusion, or corrosion.
• Keep the air intake system clean; replace the air filter on schedule to minimize dirt ingress that could affect sensors indirectly.
• Use dielectric grease on connector pins during reassembly to resist moisture and corrosion.
• Ensure the air intake hoses and clamps are secure and free from cracks.
• Address engine misfires or unusual power loss promptly to prevent compounding sensor issues.
• If you notice intermittent sensor readings or a fluctuating MIL, perform periodic checks on the wiring harness to catch frayed or damaged sections early.

DATA LIMITATIONS AND DISCLOSURE

• The provided real-world data for this exact issue (P0113 on 2016–2019 Cruze) shows no NHTSA owner complaints and no recalls in the database. This means prevalence and official remedial actions are not well documented in the data snapshot given. The diagnostic approach above uses general automotive knowledge for IAT-related faults and is tailored for Cruze vehicles; results may vary by engine variant (e.g., 1.4L turbo vs. 1.8L) and production year.
• If you have access to a service manual or OEM TSBs for your exact Cruze engine variant, consult them for any model-specific IAT circuit details or revised testing procedures.

Final advice

• Start with a careful visual inspection of the IAT sensor and its wiring, then verify power/ground and sensor resistance. If the sensor appears faulty or the wiring shows damage, replace or repair as needed and re-test to confirm the P0113 code clears. If issues persist after a sensor replacement, broaden the diagnosis to related air sensing and intake systems and consider professional diagnostics to avoid misdiagnosis.