P007B

Code

LAND ROVER P — Powertrain

Charge Air Cooler Temperature Sensor Range / Performance Bank 1

Brand: LAND ROVER

Type: P — Powertrain

Views: UK: 9 EN: 90 RU: 17

AI status

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Page language: EN

Check Engine Light (MIL) illuminated and code P007B stored
Reduced engine performance or activation of limp mode
Poor throttle response, hesitation or surging under boost
Incorrect air temperature readings on a scan tool (erratic or out-of-range values)
Possible degraded fuel economy or difficulty reaching expected boost

Read freeze-frame and live data with a capable scan tool: monitor charge air cooler temperature (CACT) and compare to ambient air temperature and expected values.
Inspect the sensor connector and wiring for corrosion, damage, pin push-out, or water ingress.
Perform a wiggle test on the harness while monitoring live data to spot intermittent opens/shorts.
Measure sensor resistance/voltage at the connector and compare to manufacturer specifications or expected thermistor behavior (resistance changes with temperature).
Check continuity between sensor ground and PCM ground, and between sensor signal and PCM input pin.
Inspect intercooler and plumbing for oil/water contamination that could affect sensor operation.

Sensor type: thermistor (typically an NTC - resistance decreases as temperature rises).
Electrical behavior: analog signal to PCM; voltage varies with temperature (commonly within the 0.1–4.9 V range depending on circuit design).
Expected trend: colder air -> higher resistance / different voltage; warmer air -> lower resistance / different voltage (opposite depending on pull-up/pull-down circuit).
Response: sensor value should change steadily when applying heat/cold (no jumpy or frozen readings).
Comparison: charge air cooler temp should be reasonably close to ambient or intake temperatures after engine off/warm-up conditions (large disparity suggests fault).

Retrieve trouble code, freeze-frame, and live data. Note CACT value at time of fault and compare to ambient temp and intake readings.
Visually inspect the sensor location, connector, and wiring for contamination, corrosion, damage, or loose pins. Repair or clean as needed.
Backprobe the sensor connector with ignition ON (engine OFF) and measure voltage at the signal wire relative to ground; compare to expected behavior. If the circuit uses resistance, measure sensor resistance with the sensor disconnected and compare to spec or to known thermistor curve.
Apply a temperature change to the sensor (freeze spray or heat source carefully) while watching live data to confirm the sensor responds smoothly and proportionally.
Perform continuity checks: verify signal continuity from sensor connector to PCM, and verify a good ground reference. Repair any open/high-resistance circuits.
If wiring and connector are good but readings are out-of-range, replace the charge air cooler temperature sensor and retest.
If a new sensor still shows incorrect readings and wiring is confirmed good, investigate PCM input circuit or other sensors that could influence diagnostics. Consider comparing to the opposite bank sensor values if available.
After repairs, clear trouble codes and perform a road test while monitoring CACT to ensure values are stable and the code does not return.

⚠️ Status

PCM detected charge air cooler temperature sensor (Bank 1) signal outside expected range or performance parameters.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-3.0 hours

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P007B — Charge Air Cooler Temperature Sensor Range / Performance Bank 1