Code
P132D
LAND ROVER
P — Powertrain
Electric turbo / supercharger control B
Views:
UK: 9
EN: 19
RU: 16
AI status
Completed
Completed
100%
Causes
- Damaged or corroded wiring or connector for electric turbo/supercharger control B
- Open or shorted control solenoid/actuator (electric turbo/supercharger actuator)
- Blown fuse or faulty relay that supplies the actuator
- Poor/chafed ground or high resistance power feed
- PCM/ECU output driver fault or internal software fault
- Mechanical fault in turbo/supercharger preventing correct control (stuck actuator, seized vane)
Symptoms
- Malfunction indicator lamp (MIL) / check engine light illuminated
- Reduced engine power or limp-home mode due to limited boost
- Poor acceleration and reduced throttle response
- Erratic or inconsistent boost pressure; boost may be too low or too high
- Possible unusual turbo/supercharger noises or actuator binding
What to check
- Read stored freeze-frame data and pending codes with a diagnostic scanner
- Visually inspect wiring, connectors, and actuator for corrosion, damage, or loose pins
- Check fuses and relays related to the boost/actuator circuit
- Attempt to command the actuator with a scan tool and observe response
- Inspect turbo/supercharger mechanically for seized vane or linkage problems
- Check battery condition and charging system voltage
Signal parameters
- Power supply to actuator: ~12 V (nominal battery voltage) when fused supply present — verify with key on/engine off
- Ground path:
- Control signal: typically PWM or switched driver from PCM — duty cycle varies 0–100% when commanded, frequency often in the 100–500 Hz range (consult model-specific service data)
- Actuator coil/solenoid resistance: model-specific; typical range tens to low hundreds of ohms — consult factory spec before replacing
- Look for intermittent voltage drops or open/short readings using a digital multimeter or oscilloscope; compare with live data from the scan tool
Diagnostic algorithm
- Connect an OBD-II scanner and record DTC P132D plus any related codes and freeze-frame data
- Clear codes, then perform a road or active test to reproduce and capture live boost and actuator data
- Perform visual inspection of wiring, connector seals, and actuator mounting; repair any physical damage
- Check related fuses and relays; replace if blown or suspect
- Backprobe the actuator connector: with ignition on, verify fused power supply present, good ground, and control signal from PCM while commanding the actuator with a scanner
- Measure actuator resistance with the connector disconnected; compare to service specification. Replace actuator if out of range or open/shorted
- If supply or ground is missing or high resistance, trace and repair wiring harness; repair corroded connectors and restore proper grounds
- If wiring and actuator check good, use an oscilloscope to verify PWM duty and waveform while commanding the actuator; look for erratic or clipped signal indicating driver fault
- If PCM driver suspected after eliminating wiring and actuator faults, check for software updates/TSBs and consider PCM bench testing or replacement per factory procedure
- After repairs, erase codes and perform final verification drive; confirm boost control and absence of P132D
Likely causes
- Wiring harness damage or corroded connector at the actuator
- Failed control solenoid/actuator (open/short or internal failure)
- Blown fuse or faulty relay in the actuator power circuit
- Poor ground connection or battery voltage issues
Fault status
Status
Control circuit fault detected for electric turbo/supercharger control B — open/short/high-resistance/intermittent. MIL illuminated and boost control may be reduced or in limp mode.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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