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Information only. This page provides general educational information about fault code P1652. We do not assess the urgency or safety implications of any specific fault. That requires in-person diagnosis by a qualified mechanic. Full terms.

Recommended next steps

Whether a fault is urgent, drivable, or routine depends entirely on the cause on a specific vehicle, and that can only be determined by a qualified mechanic with diagnostic equipment. If a warning light is illuminated, the most reliable next step is professional diagnosis.

What does P1652 mean?

P1652 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Powertrain Induced Chassis Pitch Output Circuit Malfunction.

Manufacturer-specific notes

Some manufacturers publish additional definitions or variations for this code. Always cross-check with your vehicle's own service documentation.

Cadillac Powertrain Induced Chassis Pitch Output Circuit Malfunction
Chevrolet Cooling Fan 2 Relay Control Circuit Malfunctions
Ford Main Relay Coil Circuit Open / Short to Ground (may influence oil pump relay functionality)
Lexus Main Relay Coil Circuit Open / Short to Ground (may influence oil pump relay functionality)
Mazda Power Steering Pressure Switch Circuit Malfunction
Saab Main Relay Coil Circuit Open / Short to Ground
Toyota IACV Control Circuit Malfunction
Vauxhall Main Relay Coil Circuit Open / Short to Ground (may influence oil pump relay functionality)

About Oil System codes

Oil system codes monitor engine oil quality, level, or pressure. Some are sensor-driven (oil quality monitors) and largely cosmetic; others (oil pressure low) are critical and indicate stop-driving-now conditions.

P1652 is one of 123 codes in this category. Browse all Oil System codes →

What we know about P1652 specifically

We record the SAE J2012 standardised definition and the system this code belongs to, but we have not yet published detailed driver-reported symptoms, common causes, or step-by-step diagnostic guidance for P1652.

Rather than invent that information by generating generic content from a template, we leave it out. For specific guidance, the most reliable sources are:

  • your vehicle's own service manual or manufacturer-specific technical bulletins
  • a qualified mechanic with a manufacturer-level diagnostic tool
  • a marque specialist familiar with your make and model

Spotted an issue or have something to add? Mechanics, technicians, and drivers who have first-hand experience with P1652 can submit a correction or expansion. We review every submission before publishing, mechanic submissions are prioritised.

Information only, not professional advice

The information on this page is provided for general guidance and educational purposes only. It is not a substitute for diagnosis or repair advice from a qualified mechanic. Always verify any fault before paying for repairs. carfaultcodes.co.uk accepts no liability for decisions made based on this information. Full terms →

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