Parts for your 2013 Honda Stream-Throttle position sensors

2013 Honda Stream throttle-position sensor (TPS): what it does and how to look after it

Based on Honda’s Stream RN6–RN9 Service Manual (Engine Control – ETCS), Honda Technical Training on Electronic Throttle Control, and Autodata/HaynesPro specifications for the R18A/R20A engines, the 2013 Honda Stream uses drive‑by‑wire throttle with a dual‑track throttle‑position sensor built into the throttle body. It’s absolutely relevant on this model, and Honda treats the TPS as part of the throttle body assembly rather than a separate, serviceable sensor.

The TPS tells the engine control module exactly how far the throttle plate is open. On the 2013 Stream, it’s a pair of sensors (Sensor A and B) for redundancy, so the ECU can cross‑check signals. That info drives fuelling, ignition timing, idle speed, transmission shift logic, cruise control and even traction stability behaviour. If the tracks disagree or read out of range, the ECU logs a fault and the car may drop into a limp mode to protect itself.

Owners usually notice symptoms like lazy throttle response, hunting or high idle, hesitation off the lights, cruise control refusing to set, or the MIL popping up. Common fault codes include:

• P0121/P0122/P0123 – TPS circuit performance/low/high
• P2135 – TPS A/B correlation
• P2118/P2101 – throttle actuator range/performance

Because the TPS on this Honda is integrated, replacement typically means swapping the whole throttle body. A quality OEM or equivalent unit is the go, along with a fresh gasket and a careful check for vacuum leaks. After fitting (or after a battery disconnect or throttle body clean), the ECU needs a throttle/idle learn. With Honda HDS or a capable scan tool it’s quick, without, a manual idle learn works: warm the engine fully, switch off all loads (A/C, lights, demister), then let it idle undisturbed for about 5 minutes. If the fan kicks on, add a touch more time.

Regular care helps the TPS live a long, drama‑free life. Every 40–60,000 km, have the throttle body cleaned with proper throttle‑safe cleaner (not soaking the shaft or electronics), check the intake duct for splits, make sure battery voltage and grounds are healthy, and keep the air filter fresh. If things turn pear‑shaped with repeat TPS codes, intermittent idle, or limp mode, it’s time for proper diagnosis, as a failing throttle body, wiring fault, or rare ECU issue can all mimic TPS problems.

• Does the 2013 Honda Stream have a separate TPS I can replace?
  Not as a standalone part. On this model the TPS is integrated into the electronic throttle body as dual sensors. If the TPS fails, the usual repair is replacing the entire throttle body, then performing a throttle/idle learn with a scan tool or via the manual procedure.
• What are the signs the TPS/throttle body is playing up on a 2013 Stream?
  Sluggish throttle response, inconsistent idle, stalling when coming to a stop, cruise control not engaging, and the MIL on. Typical codes are P0121–P0123 or P2135. If it drops into limp mode, throttle opening may be limited.
• Can I do a relearn at home after cleaning or replacement?
  Yes. A scan tool makes it easiest, but a manual idle learn usually does the trick: fully warm the engine, all accessories off, then idle undisturbed for about 5 minutes. If the radiator fan cycles, extend the time slightly. Persistent high or unstable idle means it’s worth using a proper scan tool or checking for air leaks.