P2135
High SeverityThrottle/Pedal Position Sensor Voltage Correlation
Fuel System
P2135 — Instant Answer
Throttle/Pedal Position Sensor Voltage Correlation
Severity: HIGH SEVERITY
Meaning: TPS sensor A and B voltages do not agree. The ECM cannot trust throttle position.
Safe to drive? NO if CEL is flashing. YES with caution if solid, but repair this week.
Estimated repair cost: $100 - $300
Most common causes:
- 1. Faulty TPS (inside throttle body) (35-45% of cases)
- 2. Wiring issue to throttle body (10-25% of cases)
- 3. Corroded connector (10-25% of cases)
Symptoms
- ⚠️Reduced power mode
- ⚠️Limp mode
- ⚠️Check engine light
- ⚠️No acceleration
Related Symptoms
Common Causes
How to Diagnose P2135
- 1Check throttle body connector
- 2Compare TPS A and B readings
- 3Check for wiring damage
- 4Replace throttle body
OEM Procedures for P2135
P2135 affects the Throttle Position Sensor. Found 9 OEM service manual procedures.
Remove/Install/Overhaul - Removal (Tracker)
Remove/Install/Overhaul - Removal (Tracker)
Remove/Install/Overhaul - Removal (Tracker)
Remove/Install/Overhaul - Removal (Tracker)
Remove/Install/Overhaul - Removal (Tracker)
Remove/Install/Overhaul - Removal (Tracker)
Replacement - Replace Throttle Position Sensor
Replacement - Replace Throttle Position Sensor
Showing 8 of 9 procedures
OEM Diagnostic Flowchart
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Repair guides, symptom pages, and wiring diagrams related to P2135.
OEM Manual Evidence
Browse →Electronic Throttle Control DTCS — 2013 Acura MDX 3.7L Eng VIN 2 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined...
Electronic Throttle Control DTCS — 2013 Acura MDX 3.7L Eng VIN YD2 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagine...
Engine Control System DTCS — 2013 Acura RDX 3.5L Eng VIN 3 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >...
Engine Control System - Advanced DTCS — 2013 Acura RDX 3.5L Eng VIN 3 Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimag...
Related Symptoms
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Open the exact vehicle hub grounded by OEM manual evidence related to P2135.
Related Codes
General fault in the TPS circuit. The TPS tells the ECM how far the throttle is open.
The secondary TPS (sensor B) has a circuit fault. Modern drive-by-wire systems use two TPS for redundancy.
The electronic throttle motor is not responding as expected.
Frequently Asked Questions
- Is P2135 expensive?
- Throttle body replacement is $100-$300 DIY. Often needs a relearn procedure after installation.
- Can I just replace the TPS?
- On most modern vehicles, the TPS is integrated into the throttle body. The whole assembly must be replaced.
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Author & Review
Written by AllOEMManuals Editorial Team. Reviewed by ASE-certified technicians and updated with factory-reference checks for fitment-sensitive steps.
This guide was drafted with AI assistance and reviewed for accuracy by a human editor.
Last updated: 2026-05-07