P067D
5 Glow Plug Control Circuit HighP067D is a generic OBD-II powertrain diagnostic trouble code: 5 Glow Plug Control Circuit High. It is logged by the engine control unit when the glow monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.
What P067D means
P067D is stored when the powertrain control module (PCM) detects that the signal from Battery Pack Voltage Sensor A is lower than the expected minimum threshold. This sensor monitors the high-voltage or auxiliary battery pack voltage and reports it to the control module for charge management and power distribution decisions.
A low circuit condition typically indicates that the sensor output has dropped below the calibrated minimum, which may be caused by a short to ground in the signal wire, an open in the reference or ground circuit, or a failed sensor. The PCM uses this reading to regulate charging strategy, so an inaccurate signal can affect battery longevity and hybrid or EV system performance.
Diagnosis should begin with a visual inspection of the sensor wiring harness for damage, corrosion, or chafing, followed by live data comparison of the sensor signal against a known-good reference. Always follow manufacturer-specific safety procedures when working near high-voltage battery systems.
Common causes
Most-frequently reported root causes when P067D is logged.
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1
Short to ground in the Battery Pack Voltage Sensor A signal circuit.
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2
Open circuit in the sensor reference voltage or ground wire.
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3
Corroded or damaged connector at the battery pack voltage sensor.
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4
Failed Battery Pack Voltage Sensor A.
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5
PCM internal fault causing incorrect sensor reading interpretation.
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6
Damaged wiring harness near the battery pack assembly.
Symptoms drivers notice
How to diagnose P067D
A typical diagnostic flow when this code is present.
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1
Connect a scan tool and record all stored DTCs and freeze frame data.
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2
Review live data for Battery Pack Voltage Sensor A signal value and compare to battery terminal voltage.
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3
Perform a visual inspection of the sensor connector and wiring harness for damage, corrosion, or shorts.
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4
Check the sensor reference voltage and ground circuit integrity with a multimeter.
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5
Measure the sensor signal voltage at the PCM connector to isolate harness versus sensor fault.
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6
Replace the Battery Pack Voltage Sensor A if wiring checks pass and signal remains out of range.
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7
Clear DTCs and perform a drive cycle to verify the repair.
Vehicles where we've handled P067D
Platforms in our catalogue with confirmed P067D coverage.
Related powertrain codes
Frequently asked questions
Is it safe to drive with P067D active?
Short-term driving may be possible, but the battery management system is operating with inaccurate data, which could damage the battery pack over time. Have the vehicle inspected promptly.
Can a weak 12V auxiliary battery trigger P067D?
In some vehicles the auxiliary battery supplies sensor reference voltage; a weak auxiliary battery could cause low reference voltage and trigger this code.
Does P067D always mean the sensor needs replacement?
Not always. A wiring fault such as a short to ground or corroded connector is equally common. Always diagnose the circuit before replacing the sensor.
Will P067D clear itself after repair?
The code will not clear automatically. After repairing the root cause you must use a scan tool to erase stored DTCs and confirm the fix with a drive cycle.
Disabling P067D in software
RaceTune can permanently disable P067D — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.
ECUs with a P067D disable in our catalogue
Confirmed coverage from our recipe database — we support many more families. Upload your file and our identifier will match it automatically.
- Bosch EDC17C50 verified 1 software version
Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.
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