Code
P007C
LAND ROVER
P — Powertrain
Charge Air Cooler Temperature Sensor - Low Circuit - Bank 1
Views:
UK: 10
EN: 16
RU: 10
AI status
Completed
Completed
100%
Causes
- Short to ground on the charge air cooler temperature sensor signal circuit (Bank 1)
- Open or high-resistance wiring/connector to the sensor
- Corroded, loose or damaged sensor connector/pins
- Failed charge air cooler (intercooler) temperature sensor (thermistor)
- Faulty ECM/PCM or internal driver fault (less common)
- Intermittent wiring damage (chafing, water intrusion)
Symptoms
- Malfunction Indicator Lamp (MIL) / Check Engine Light illuminated
- Stored P007C code (may be accompanied by related codes)
- Incorrect charge air cooler temperature reading in live data (very low or pegged at minimum)
- Possible reduced engine performance or limp mode depending on vehicle strategy
- Reduced turbo/intercooler control accuracy, possible poor drivability or fuel trim anomalies
What to check
- Read freeze-frame and live data with a suitable diagnostic scanner; note charge air cooler temperature, intake air temperature and related sensors
- Compare charge air cooler temperature reading with ambient/ambient intake temperature and an external thermometer if available
- Inspect sensor connector and pins for corrosion, damage, or water ingress
- Perform a visual inspection and wiggle test of wiring from the intercooler/sensor to the engine harness and ECM while monitoring live data for changes
- Check for related codes (e.g., bank 2 or intake air temp codes)
- Measure supply/reference voltage and ground at the sensor connector with ignition ON (engine off) per service manual
Signal parameters
- Typical sensor type: NTC thermistor (resistance changes with temperature) — output is a voltage to the ECM via a pull-up or reference circuit
- Expected signal voltage range (generic): ~0.2–4.8 V depending on temperature and circuit design — “low circuit” faults often appear below ~0.2–0.5 V (consult Land Rover spec)
- Typical resistance behaviour: resistance increases as temperature falls and decreases as temperature rises (refer to manufacturer tables for exact ohms @ temp)
- Reference voltage/ECM pull-up: usually ~5 V (measure at harness/ECM pin)
- Ground continuity: low ohms between sensor ground pin and vehicle chassis ground (consult service manual)
Diagnostic algorithm
- Connect a diagnostic scanner and confirm P007C (clear code and re-run test to verify repeatability).
- Note live data for charge air cooler temperature and compare to ambient intake and outside air temperature; if reading is extremely low or constant minimum, suspect low circuit/short to ground.
- Visually inspect sensor, connector, wiring, and intercooler area for damage, oil/water intrusion, or corrosion. Repair any obvious damage.
- With ignition ON (engine off) backprobe the sensor connector: measure reference/pull-up voltage at the sensor harness — verify against manufacturer spec (typically ~5 V).
- Measure signal voltage at the sensor with a known ambient temperature. If the signal is near 0 V (very low), check for short to ground by disconnecting the sensor harness and measuring resistance from the signal pin to chassis ground. Low resistance indicates a short to ground in the wiring.
- If the wiring checks OK (no short to ground), disconnect harness and measure sensor resistance across its terminals; compare to Land Rover specification or known thermistor tables. Replace sensor if out of spec.
- If sensor and wiring are good at the harness but ECM pin shows abnormal values, inspect ECM connector pins and grounds. Consider ECM bench test or replacement only after wiring and sensor are verified.
- After repair or replacement, clear codes and perform road test/monitor live data to confirm proper operation and no reoccurrence.
Likely causes
- Short to ground on the sensor signal or reference circuit
- Corroded/poor connector or pin at sensor or ECM
- Failed/shorted charge air cooler temperature sensor (Bank 1)
- Damaged wiring harness between sensor and ECM
Fault status
Status
P007C — Charge Air Cooler Temperature Sensor Circuit Low (Bank 1). The ECM is detecting a lower-than-expected signal from the charge air cooler temperature sensor on Bank 1, which may indicate a short to ground, wiring/connector fault, or failed sensor.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
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