Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / P00CE — Measurement of the intake air temperature system - Correlation of multiple sensors

P00CE — Measurement of the intake air temperature system - Correlation of multiple sensors

Detailed page for trouble code P00CE.

34,396codes
59brands
11,905generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

P00CE

LAND ROVER P — Powertrain

Measurement of the intake air temperature system - Correlation of multiple sensors

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • One or more faulty IAT sensors (open, shorted, or out-of-spec thermistor)
  • Damaged, corroded, or loose sensor connector(s) or wiring (opens, shorts to ground/power)
  • Poor sensor grounding or weak reference voltage from ECU
  • Incorrect sensor installed or sensor located incorrectly in the intake stream
  • Contamination (oil/soot) or physical damage to sensor element
  • Intermittent wiring harness faults (chafing, water ingress)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Possible rough idle, hesitation or drivability faults under some conditions
  • Incorrect fuel trim or increased fuel consumption
  • Hard starting or poor cold-start behavior if IAT is reported incorrect
  • Reduced engine performance or limp-home mode in rare cases
  • Codes related to related sensors (MAF, MAP, ambient air, coolant) may also be present

What to check

  • Read and record freeze frame data and live data for all intake air temperature sensors and related inputs (MAF, MAP, ambient/air temp, coolant temp)
  • Compare reported IAT values to ambient temperature and to each other (expect similar trends and magnitudes)
  • Visually inspect IAT sensor connectors and wiring for corrosion, damage, heat exposure, or loose pins
  • Perform wiggle test on harness while watching live data for intermittent changes
  • Check sensor reference voltage (usually ~5V) and ground at the connector with key on
  • Measure IAT sensor resistance at known ambient temperature and compare to manufacturer spec (or compare two sensors if identical)

Signal parameters

  • IAT sensors are usually NTC thermistors — resistance falls as temperature rises
  • Typical idle/reference voltages: sensor output ~0.5–4.5 V depending on temperature (varies by design)
  • Expected response: IAT value should change smoothly when air temperature changes (blow on sensor or expose to warm/cool air)
  • Sensor resistance and voltage must match published OEM specifications for the exact sensor and model year

Diagnostic algorithm

  1. Retrieve all stored DTCs, freeze frame, and live data. Note conditions when code set.
  2. Compare upstream and downstream IAT sensor readings (and ambient) on a scan tool. Look for large discrepancies or non-responsive sensor(s).
  3. Visually inspect connectors and wiring for damage, corrosion, bent pins, or poor sealing. Repair as necessary.
  4. With ignition ON (engine off), backprobe the IAT sensor connector(s). Verify reference voltage (typically ~5V), sensor signal voltage, and good ground.
  5. Measure sensor resistance at ambient temperature and compare to OEM chart or to the other IAT sensor if present. Replace sensor if out of specification.
  6. Perform an active test if available (observe sensor change while exposing to warm/cool air). Confirm smooth response and repeatability.
  7. If sensor voltages and resistances are correct but correlation fault persists, inspect wiring continuity between sensor(s) and ECU for shorts/opens. Repair harness as needed.
  8. If wiring and sensors check good, verify ECU grounds and the reference supply. Check for software updates or calibrations; reflash ECU if required per manufacturer guidance.
  9. After repairs, clear codes, perform a road test and re-check live data to ensure sensors remain correlated under operating conditions.
  10. If fault remains after sensors and wiring verified, consult manufacturer diagnostic procedures for ECU diagnosis or replacement.

Likely causes

  • Failed/aged IAT thermistor in upstream or downstream sensor
  • Connector corrosion at IAT sensor(s) or broken pin
  • Short or open in harness between sensor and PCM/ECU
  • IAT sensor installed in incorrect position (e.g., swapped with ambient sensor)
  • Intermittent fault caused by wiring rubbing against chassis or hot engine components
  • ECU reference 5V/ground fault or ECU needs reflash

Fault status

⚠️ Status
ECU detected inconsistent or implausible intake air temperature values between multiple sensors or related inputs, indicating a sensor, wiring, or ECU reference fault that can affect engine control.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .