Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part of the engine that helps control air flow is getting too hot.
The DISA valve, which adjusts the intake manifold for optimal air flow, is experiencing higher than normal temperatures.
The P1535 code indicates that the temperature of the coil in the DISA valve has exceeded its limit. This valve is responsible for altering the path of air entering the engine to optimize performance and efficiency. Excessive heat can indicate a malfunction or failure in the valve or its control system.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty DISA valve
• Electrical issues such as short circuits
• Engine overheating
DISA: Differentiated Intake Manifold
OBD-II: On-Board Diagnostics, Second Generation
• Scan the vehicle for OBD-II codes.
• Inspect the DISA valve and its wiring for damage.
• Check for any signs of engine overheating.
• Replace the faulty DISA valve.
• Repair or replace damaged wiring.
• Address any engine overheating issues.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• BMW 3 Series
• BMW 5 Series
• Mini Cooper
• Regularly inspect the intake system.
• Ensure proper engine cooling.
• Maintain electrical connections.
Engine Performance
• Avoid driving aggressively until the issue is fixed.
• Have the vehicle inspected by a professional mechanic.
Check with your vehicle manufacturer; powertrain warranties may cover this component.
This code has been reported in vehicles with higher mileage or in those with known cooling system issues.
Moderate – It should be addressed soon to prevent further engine performance issues.
Driving with this code may lead to reduced engine performance and increased emissions.
• Engine at operating temperature
• Vehicle in idle and under load conditions
The DISA valve is typically located on the intake manifold of the engine.
Q: Can I drive with a P1535 code?
A: It's not recommended as it can lead to reduced engine performance and efficiency.
Q: What happens if I ignore this code?
A: Ignoring it can lead to further damage to the intake system and reduced fuel economy.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.